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What is 'Market Failure'

Market failure describes any situation where the individual incentives for rational behavior do not lead to rational outcomes for the group. Put another way, each individual makes the correct decision for him/herself, but those prove to be the wrong decisions for the group. In traditional microeconomics, this is shown as a steady state disequilibrium in which the quantity supplied does not equal the quantity demanded.

BREAKING DOWN 'Market Failure'

A market failure occurs whenever the individuals in a group end up worse off than if they had not acted in perfectly rational self-interest. Such a group either incurs too many costs or receives too few benefits. Even though the concept seems simple, it can be misleading and easy to misidentify.

Contrary to what the name implies, market failure does not describe inherent imperfections in the market economy — there can be market failures in government activity, too. One noteworthy example is rent seeking by special interest groups. Special interest groups can gain a large benefit by lobbying for small costs on everyone else (such as through a tariff). When each small group imposes its costs, the whole group is worse off than if no lobbying had taken place.

Additionally, not every bad outcome from market activity counts as a market failure. Nor does a market failure imply that private market actors cannot solve the problem. On the flip side, not all market failures have a potential solution, even with prudent regulation or extra public awareness.

Common Types of Market Failure

Commonly cited market failures include externalities, monopoly privileges, information asymmetries and factor immobility. One easy-to-illustrate market failure is the “public good problem.” Public goods are goods or services which, if produced, the producer cannot limit its consumption to paying customers.

Public goods create market failures if some consumers decide to not pay but use the good anyway. National Defense is one such public good because each citizen receives similar benefits regardless of how much they pay. It is very difficult to privately produce the optimal amount of national defense. Since governments cannot use a competitive price system to determine the correct level of national defense, this may be a market failure with no pure solution.

Solutions to Market Failures

There are many potential solutions for market failures. Asymmetrical information is often solved by intermediaries or ratings agencies — investors rely on Moody’s and Standard & Poor’s to inform about securities risk; Underwriter’s Laboratories LLC performs the same task for electronics. Negative externalities, such as pollution, are solved with tort lawsuits that increase opportunity costs for the polluter. Tech companies that receive positive externalities from tech-educated graduates can subsidize computer education through scholarships.

If businesses hire too few teenagers or immigrants after a minimum wage increase, the government can create exceptions for younger or less-skilled workers. The 1978 Airline Deregulation Act solved the underproduction of cheap air travel by allowing new price and business competition. One popular public good, radio broadcasts, elegantly solved the non-excludable problem by packaging periodic paid advertisements with the free broadcast.

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