1.1.6a Types of economic system

Economic Systems

1. Because resources are scarce relative to wants, every society must answer the same three questions: what, how and for whom to produce.
2. Systems differ mainly in who answers those questions: impersonal markets, the central state, or a blend of both.
   1. At root the choice is about how information and incentives are handled, which is why the three systems perform so differently.

Market and Command

1. Free market: the price mechanism signals what consumers want, rewards firms that supply it with profit, and rations goods to those willing to pay.
   1. Adam Smith called this the invisible hand: self-interested buyers and sellers coordinate without anyone directing them.
   2. Friedrich Hayek added that prices carry dispersed knowledge no central planner could ever gather, so decentralised markets adapt faster than commands.
2. Command: the state owns resources and central planners set output targets, prices and distribution according to political priorities.
   1. Karl Marx argued that private ownership let owners of capital exploit workers, so collective ownership could remove the inequality he saw in free markets.
   2. Lacking the signals prices give, planners struggle to match supply to demand, so surpluses of unwanted goods sit beside shortages of wanted ones.

The Mixed Economy

1. Mixed: markets allocate most goods and services, while the state supplies public goods, corrects market failures and redistributes income.
   1. Almost every real economy is mixed; they differ only in how far the state reaches, from lightly governed Hong Kong to the heavily managed Nordic economies.

The Basic Questions

1. A free market answers what and how through prices and profit, and for whom through ability to pay.
2. A command economy answers all three through central planning and political priorities.
3. A mixed economy uses markets for most decisions but lets the state override them for equity, public goods or stability.

Which system allocates resources best?

1. The free market holds strong appeal because profit incentives and price signals push firms to cut costs and innovate, giving consumers wide choice at low cost.
2. But left alone it can leave the poorest without essentials, under-provide public goods and ignore externalities, which is why no economy is purely free market.
3. Command systems can pursue equity and stability, but without the incentives and information that prices carry they tend to produce shortages, queues and weak innovation, as in the former Soviet Union.
4. On balance, the best mix depends on context: a society's priority between efficiency and equity, the quality of its institutions, and how severe its market failures are.

1.1.6b Advantages and disadvantages; role of the state

Market versus Command

1. The free market and the command economy sit at opposite ends of a spectrum, and each has clear strengths and clear weaknesses, so neither is wholly superior.
2. The real debate is therefore about the right balance of market and state in a mixed economy.

Free Market Trade-offs

1. Strengths of the free market: the profit motive rewards firms that cut costs and give consumers what they want, pushing resources to their most valued uses.
   1. Competition then forces choice, low prices and reinvestment, so markets tend to be efficient and innovative, as the rapid pace of smartphone improvement shows.
2. Weaknesses of the free market: because goods go to those able to pay, the market can leave the poorest without essentials and concentrate rewards on owners of capital and scarce skills.
   1. It also under-provides public goods (the free-rider problem), ignores externalities such as pollution, and lets monopolies restrict output, a set of failures the state may need to correct.

Command Trade-offs

1. Strengths of the command economy: the state can guarantee essentials such as housing, healthcare and work to all, reducing the inequality a market leaves behind.
   1. Planning can also direct resources to national priorities and smooth the boom-and-bust that unregulated markets can generate.
2. Weaknesses of the command economy: without profit or private ownership, workers and managers have little reason to work hard, cut costs or innovate.
   1. Planners also cannot gather the dispersed knowledge that prices convey, so they routinely produce shortages of wanted goods alongside surpluses of unwanted ones.

Role of the State

1. The state provides public goods, such as defence and street lighting, that markets under-supply because no firm can charge free-riders.
2. It corrects market failures through tax, subsidy and regulation, for example the UK sugar levy on soft drinks and subsidised vaccination.
3. It redistributes income through progressive taxes and benefits to address inequality the market leaves behind.

How far should the state intervene?

1. Intervention holds strong justification because unregulated markets under-provide public goods, ignore externalities and generate inequality that the state can address.
2. But intervention can cause government failure: imperfect information, unintended consequences and administrative cost can leave society worse off than before.
3. But too much state control blunts the incentives and price signals that make markets efficient, as the shortages of the command economies showed.
4. On balance, the right degree of intervention depends on context: the severity of the market failure, the competence of government, and society's priority between efficiency and equity.