1.
Market failure occurs when the price mechanism fails to account
for all of the costs and benefits necessary to provide and consume
a good. The market will fail by not supplying the socially optimal
amount of the good.
Prior to market failure, the supply and demand within the market
do not produce quantities of the goods where the price reflects the
marginal benefit of consumption. The imbalance causes allocative
inefficiency, which is the over- or under-consumption of the
good.
The structure of market systems contributes to market failure.
In the real world, it is not possible for markets to be perfect due
to inefficient producers, externalities, environmental concerns,
and lack of public goods. An externality is an effect on a third
party which is caused by the production or consumption of a good or
service.
During market failures the government usually responds to
varying degrees. Possible government responses include:
- legislation – enacting specific laws. For example, banning
smoking in restaurants, or making high school attendance
mandatory.
- direct provision of merit and public goods – governments
control the supply of goods that have positive externalities. For
example, by supplying high amounts of education, parks, or
libraries.
- taxation – placing taxes on certain goods to discourage use and
internalize external costs. For example, placing a ‘sin-tax’ on
tobacco products, and subsequently increasing the cost of tobacco
consumption.
- subsidies – reducing the price of a good based on the public
benefit that is gained. For example, lowering college tuition
because society benefits from more educated workers. Subsidies are
most appropriate to encourage behavior that has positive
externalities.
- tradable permits – permits that allow firms to produce a
certain amount of something, commonly pollution. Firms can trade
permits with other firms to increase or decrease what they can
produce. This is the basis behind cap-and-trade, an attempt to
reduce of pollution.
- extension of property rights – creates privatization for
certain non-private goods like lakes, rivers, and beaches to create
a market for pollution. Then, individuals get fined for polluting
certain areas.
- advertising – encourages or discourages consumption.
- international cooperation among governments – governments work
together on issues that affect the future of the environment.
2).
Market failure occurs due to inefficiency in the allocation of
goods and services. A price mechanism fails to account for all of
the costs and benefits involved when providing or consuming a
specific good. When this happens, the market will not produce the
supply of the good that is socially optimal – it will be over or
under produced.
In order to fully understand market failure, it is important to
recognize the reasons why a market can fail. Due to the structure
of markets, it is impossible for them to be perfect. As a result,
most markets are not successful and require forms of
intervention.
Reasons for market failure include:
- Positive and negative externalities: an
externality is an effect on a third party that is caused by the
consumption or production of a good or service. A positive
externality is a positive spillover that results from the
consumption or production of a good or service. For example,
although public education may only directly affect students and
schools, an educated population may provide positive effects on
society as a whole. A negative externality is a negative spillover
effect on third parties. For example, secondhand smoke may
negatively impact the health of people, even if they do not
directly engage in smoking.
- Environmental concerns: effects on the
environment as important considerations as well as sustainable
development.
- Lack of public goods: public goods are goods
where the total cost of production does not increase with the
number of consumers. As an example of a public good, a lighthouse
has a fixed cost of production that is the same, whether one ship
or one hundred ships use its light. Public goods can be
underproduced; there is little incentive, from a private
standpoint, to provide a lighthouse because one can wait for
someone else to provide it, and then use its light without
incurring a cost. This problem – someone benefiting from resources
or goods and services without paying for the cost of the benefit –
is known as the free rider problem.
- Underproduction of merit goods: a merit good
is a private good that society believes is under consumed, often
with positive externalities. For example, education, healthcare,
and sports centers are considered merit goods.
- Overprovision of demerit goods: a demerit good
is a private good that society believes is over consumed, often
with negative externalities. For example, cigarettes, alcohol, and
prostitution are considered demerit goods.
- Abuse of monopoly power: imperfect markets
restrict output in an attempt to maximize profit.
When a market fails, the government usually intervenes depending
on the reason for the failure.