【summary】
A linear economy is a traditional economic model that follows a unidirectional flow of "make, use, and throw away."
Natural resources are mined, companies make products, consumers use them, and ultimately they are disposed of. It is a system based on mass production, mass consumption, and mass disposal that supported economic growth in the 20th century.
However, fluctuations in resource prices, increased waste, climate change responses, tightening regulations, and destabilizing supply chains are making it difficult to continue with the same model. What is attracting attention is the circular economy, which aims to use products and resources for as long as possible, allowing them to be recovered, reused, and remanufactured.
The shift from a linear economy to a circular economy is also a long-term theme for investors. However, just because a company or fund is related to ESG or the circular economy does not necessarily mean that the investment return will be high. Policy, technology, cost, demand, profitability, and competitive environment must all be reviewed.
This article is a general learning article that organizes the basics of linear economy and circular economy. It is not a recommendation to buy or sell specific financial products or individual stocks. Stocks, investment trusts, ETFs, etc. are subject to risks such as price fluctuations, loss of principal, liquidity, exchange rates, interest rates, credit, policy changes, and changes in theme popularity.
What is linear economy?
"Linear" in linear economy means straight line.
As an economic model, it refers to a unidirectional flow as shown below.
資源採掘
↓
生産
↓
消費
↓
廃棄In other words, it is a model that extracts resources, makes products, and then throws them away when they are finished with them.
It is easier to understand if you consider a familiar example.
*PET bottle
- Home appliances *Clothing *Plastic products
- Disposable containers
- Miscellaneous goods that can be replaced in a short period of time
Of course, not everything is completely thrown away. We also offer recycling and second-hand sales. However, an economy whose basic design is ``produce in large quantities, sell in large quantities, and dispose of what is no longer used'' is called a linear economy.
Why has the linear economy become popular?
The linear economy did not spread by accident.
After the Industrial Revolution, technological advances, population growth, urbanization, and the development of logistics networks made mass production and mass sales easier.
技術進歩
↓
大量生産
↓
単価低下
↓
大量販売
↓
経済成長For companies, the more they produce the same product, the easier it is to lower costs. For consumers, it becomes easier to obtain cheap and convenient products. For the government, industrial expansion leads to employment, tax revenue, and infrastructure development.
In fact, the linear economy has supported the convenience of modern society. Our lives benefit greatly from mass production, including home appliances, clothing, food packaging, transportation, and communication equipment.
However, this system was an easy model to use in an era when resources were cheap, disposal costs were hard to see, and environmental burdens could be pushed outside. As resource constraints and environmental regulations become stronger, it becomes difficult to operate on the same assumptions.
Mechanism of linear economy
When looking at the economy as a whole, the linear economy follows the following flow.
天然資源
↓
企業が製造
↓
流通・販売
↓
消費者が購入
↓
使用
↓
廃棄物発生In this model, a company's growth is easily tied to "how much it produces and how much it sells."
For example, if sales volume increases, sales will also increase. When a new product is released, replacement demand is created. Lowering costs through mass production can also improve profit margins.
On the other hand, as the number of things increases, resource usage, energy consumption, waste, and logistics burden also increase.
A feature of the linear economy is that while it is easy to see profits and convenience, it is also easy to see the costs of waste and environmental impact later.
Advantages of linear economy
High production efficiency
Since the same product can be mass-produced, it is easier to reduce the cost per item.
By setting up factories, logistics, and sales networks on a large scale, it becomes easier for consumers to buy products at lower prices. This benefit has become significant in areas such as home appliances, food, clothing, and daily necessities.
Easy to promote economic growth
Mass production and mass consumption tend to lead to increased sales for companies.
Many industries, such as manufacturing, logistics, advertising, retail, and finance, revolve around product sales. If consumption increases, corporate profits will increase, making it easier for employment and investment to increase.
Encourage innovation
Companies compete by developing new products and useful features.
Consumer demand and corporate competition are behind the development of new products in many fields, including smartphones, home appliances, automobiles, clothing, and food packaging.
Create jobs
In a linear economy, employment is created in many processes such as resource extraction, manufacturing, logistics, sales, advertising, and waste disposal.
Especially in countries with large manufacturing and retail industries, this unidirectional production and consumption model has become the basis for employment.
Problems with linear economy
Resource depletion
Earth's resources are not infinite.
採掘
↓
消費
↓
廃棄
↓
また採掘If this trend continues, resource prices will rise and supply shortages will likely occur.
In particular, metal resources, rare metals, fossil fuels, wood, and water resources are areas where supply constraints are likely to be a problem depending on the industry or region.
From an investment perspective, fluctuations in resource prices affect a company's costs, profit margins, capital investment, and inventory management. The more resources a company uses, the more important it is whether it can pass on increases in procurement costs to its prices.
Increased waste
Mass production and mass consumption create mass waste.
The following types of waste are particularly problematic.
- plastic waste
- Electronic waste
- Clothing disposal
- Food waste
- Construction waste
As waste increases, issues include processing costs, lack of landfill space, marine pollution, and CO2 emissions during incineration.
Even if a profit is made when a product is sold, society as a whole may have to bear the cost of disposal. This is an often overlooked part of the linear economy.
Large environmental impact
Various environmental loads occur during the process from production to disposal.
- CO2 emissions
- Deforestation
- Water pollution
- soil pollution
- Impact on biodiversity *Load due to incineration and landfilling
Companies with a large environmental impact may face risks such as stricter regulations, carbon pricing, investment in reducing emissions, lawsuits, and brand damage.
Investors need to consider not only whether it is good or bad for the environment, but also how the burden will affect future costs and competitiveness.
Supply chain is prone to instability
Linear economies tend to assume stable resource procurement.
However, rising resource prices, geopolitical risks, transportation disruptions, export restrictions, and natural disasters can make it difficult to procure raw materials.
In a model where resources are used once and then thrown away, domestic collection and reuse mechanisms tend to be weak, making it easier to rely on external resource supplies.
This is a very practical point in corporate analysis. Companies with unbalanced procurement of raw materials, weak ability to pass on prices, and companies with difficult inventory management are more susceptible to resource constraints.
Difference from circular economy
Circular economy is contrasted with linear economy.
Circular economy is the idea of using resources and products for as long as possible, and linking them to recovery, reuse, repair, remanufacturing, and recycling.
| Item | Linear Economy | Circular Economy |
|---|---|---|
| Basic structure | Make, use, throw away | Make, use, collect, reuse |
| Resource use | One-way | Circulation |
| Corporate Ideas | Increasing Sales Volume | Emphasis on Product Life and Resource Efficiency |
| Waste | Easily increases | Aiming to reduce |
| Earnings model | Mainly sales-based | Also includes repair, resale, sharing, and servicing |
| Main issues | Resource constraints, disposal, environmental impact | Recovery costs, quality control, profitability |
Circular economy is more than just recycling.
From the product design stage, we consider whether the product can be used for a long time, is easy to repair, can parts be recovered, can recycled materials be used, and can it be provided as a service.
資源
↓
製造
↓
利用
↓
回収
↓
修理・再利用・再製造
↓
再び利用If the linear economy is a "straight line", the circular economy is a model that tries to create a "ring".
Businesses attracting attention in the circular economy
The transition to a circular economy focuses on several areas.
| Field | Contents | Points for investors |
|---|---|---|
| Recycling | Reusing waste as resources | Collected amount, processing capacity, profitability |
| Recycled materials | Recycled plastics, recycled metals, etc. | Quality, supply stability, price competitiveness |
| Repair/Reuse | Extending product life | Demand, inventory management, warranty costs |
| Sharing | Moving from ownership to use | Occupancy rate, frequency of use, maintenance costs |
| Refurbishing | Refurbishing and reselling used products | Quality control, sales channels, gross profit margin |
| Subscription service | Providing functions without selling products | Churn rate, collection system, asset efficiency |
| Resource recovery | Extracting materials from used products | Technology, regulations, and capital investment |
However, just because it is related to the circular economy, it does not necessarily mean that profits will be made immediately.
Collection costs are high, the quality of recycled materials is unstable, capital investment is heavy, consumers do not choose used products, and regulatory compliance takes time. There are these real walls.
If you look at it as an investment theme, you want to check not only ``Is it socially necessary?'' but also ``Who will pay and where will the profits remain?''
Why the world is transitioning to a circular economy
There are some big changes behind the scenes.
Resource constraints
Demand for resources is likely to increase due to population growth and economic growth in emerging countries.
At the same time, the supply of rare metals and energy resources is affected by geopolitical risks and mining costs. Simply throwing away resources tends to increase procurement risks.
Environmental regulations
Regulations on plastics, emissions, waste, greenhouse gases, etc. are becoming stricter in many countries.
For companies, environmental responsiveness is not just an image strategy, but is becoming a condition for business continuity.
Decarbonization policy
Energy is required to produce, transport, use, and dispose of products.
Circular economy is also linked to decarbonization policies by reducing resource input and waste. Of course, collection and recycling also require energy, so not everything is automatically low-carbon. You need to look at it throughout the lifecycle.
Changes in corporate evaluation
With the spread of ESG investment and sustainability disclosure, environmental response has become a part of corporate evaluation.
Investors are increasingly looking at regulatory risk, resource efficiency, supply chain, emissions and waste management, not just sales and profits.
In Japan as well, policies that position circular economy as a growth field are progressing. Documents from the Ministry of the Environment indicate that the government aims to increase the market size of circular economy-related businesses to over 80 trillion yen by 2030.
Relationship with investment
The transition from a linear economy to a circular economy is a long-term investment theme.
Areas that are likely to receive attention include:
- Recycle
- Renewable energy
- Resource recovery
- Recycled material
- Repair business
- Used distribution
- Sharing service
- Energy saving equipment *Waste treatment
However, it is dangerous to buy based on the theme alone.
Circular economy is a big topic, but not all companies can make a profit. Capital investment is heavy, it is affected by raw material prices, and there are regulatory compliance costs. If competition becomes fierce, profit margins may not grow as much as expected.
The points investors should look at are:
| Points to watch | Contents |
|---|---|
| Profitability | Is not only sales improving but also profit margin |
| Collection cost | Is the cost of collecting resources too high |
| Technological capabilities | Does it have an advantage in sorting, recycling, and quality control? |
| Regulatory response | Can we respond to policy changes |
| Customer demand | Will customers choose reclaimed materials or repair services |
| Capital investment | Will cash be returned for the investment amount |
| Competitive environment | Are there too many companies entering the market? |
ESG and circular economy are the gateways to investment. However, in the end, you need to check sales, profits, cash flow, and competitive advantage.
Difference from interest economy
An interest economy is an economy in which people's attention or time has value.
人々の注意
↓
利用時間
↓
広告・課金・データ活用
↓
価値創出On the other hand, linear economy focuses on the flow of goods and resources.
資源
↓
製造
↓
消費
↓
廃棄In other words, interest economy is a way of thinking that looks at the "flow of people's time and attention," and linear economy is a way of thinking that looks at the "flow of resources and products."
Both are important in understanding the modern economy, but they look at different resources.
| 概念 | 見ている資源 | 主な企業例の考え方 |
|---|---|---|
| 関心経済 | 注意、時間、利用習慣 | SNS、動画、ゲーム、広告、AIサービス |
| リニアエコノミー | 天然資源、製品、廃棄物 | 製造、小売、資源、物流、廃棄処理 |
| 循環経済 | 回収資源、再利用、製品寿命 | リサイクル、修理、再販、サービス化 |
Understanding this difference will make it much easier to organize your economic model.
Framework for beginners
When looking at economic models, it is easier to understand if you consider them in the following order.
何を資源と考えるか？
↓
どのように価値を生むか？
↓
どこでコストが発生するか？
↓
最後にどう処理されるか？
↓
循環できる余地はあるか？For example, if you have a smartphone, you can organize it like this:
鉱物資源・部品
↓
製造
↓
販売
↓
利用
↓
買い替え
↓
中古販売・部品回収・廃棄If we advance design for easy repair, second-hand distribution, battery recovery, and parts reuse, we will move closer to a circular economy.
On the other hand, if products cannot be replaced or repaired in a short period of time, are not collected, and are simply discarded, the model is close to a linear economy.
Common Misconceptions
Is the linear economy bad?
Not necessarily.
The linear economy is an important mechanism that supported the development of modern society. Mass production has made it possible to widely distribute products necessary for daily life at low prices.
The problem is that now that resource constraints and environmental burdens have increased, it has become difficult to continue expanding the same model.
Will a circular economy solve everything?
no.
The circular economy also has its challenges.
- Collection cost is high
- The quality of recycled materials is unstable
- Consumers do not choose second-hand products
- Heavy capital investment
- Recycling also requires energy
- Companies may not be profitable
Circular economy cannot be advanced by idealism alone. Technology, institutions, consumer behavior, and corporate profitability must all align.
Does ESG investment always have high returns?
Not necessarily.
While ESG and circular economy tend to be long-term themes, investment returns are influenced by corporate performance, valuation, interest rates, policy, supply and demand, and the competitive environment.
Even if the theme is right, investment results may be difficult to achieve if the stock price is already too high or the business has low profit margins.
Is recycling a circular economy?
Recycling is important, but it alone does not constitute a circular economy.
Circular economy considers everything from product design, repair, reuse, resale, parts recovery, servicing, and waste reduction.
It is important not only to reuse items after throwing them away, but also to design them so that they are difficult to throw away in the first place.
summary
The linear economy is a traditional economic model of "make, use, throw away."
Through mass production and mass consumption, we have supported economic growth, employment, technological innovation, and convenience in life.
On the other hand, there are also challenges such as:
- Resource depletion
- Increase in waste *Environmental load
- Supply chain instability
- Regulatory compliance costs
Therefore, the following transformation is currently underway.
リニアエコノミー
↓
サーキュラーエコノミーThis change is also a long-term theme for investors.
However, it is not as simple as saying that you should buy something because it is related to the circular economy, or feel safe because it is ESG. Can resource recovery, reuse, repair, resale, and service delivery really lead to profit? Are we relying too much on policy? Will the cash return be commensurate with the capital investment?
The end is always the same. Look at the quality and profitability of the business, not the theme. The difference between linear economy and circular economy is the basic lens for this purpose.
Source/Reference materials
This article is an educational article that summarizes general ideas regarding linear economy, circular economy, and ESG investment. Institutions, policies and investment environments may change, so please check official information for details.
- Ministry of Economy, Trade and Industry “Circular Economy”, Ministry of Economy, Trade and Industry official page
- Ministry of Economy, Trade and Industry, Hokkaido Bureau of Economy, Trade and Industry “Circular Economy”, [Official page of the Hokkaido Bureau of Economy, Trade and Industry, Ministry of Economy, Trade and Industry] (https://www.hkd.meti.go.jp/information/recycle/ce.htm)
- Ministry of the Environment “Recycling-based society/3R related”, Ministry of the Environment official page
- Ministry of the Environment “2020 White Paper on Environment, Recycling-based Society, and Biodiversity”, Ministry of the Environment official page
- European Commission "Circular economy", European Commission official page
- J-FLEC/Investment Time “What are the risks of stock investment?” J-FLEC official page
- Confirmation date: 2026-06-09