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Because many people can benefit from the same pubic goods and share in their consumption, and because those who do not pay for these goods still get to use them, it is usually impossible to produce these goods in private markets. Or at least it is impossible to produce enough in private markets to reach the efficient level of output. That happens because some people will try to consume the goods without paying for them, and get a free ride from those who do pay. As a result, the government must usually take over the decision about how much of these products to produce. In some cases, the government actually produces the good; in other cases it pays private firms to make these products.

The classic example of a public good is national defense. It is not a rival consumption product, since protecting one person from an invading army or missile attack does not reduce the amount of protection provided to others in the country. The nonexclusion principle also applies to national defense. It is not possible to protect only the people who pay for national defense while letting bombs or bullets hit those who do not pay. Instead, the government imposes broad-based taxes to pay for national defense and other public goods.

Adjusting for External Costs or Benefits

There are some private markets in which goods and services are produced, but too much or too little is produced. Whether too much or too little is produced depends on whether the problem is one of external costs or external benefits. In either case, the government can try to correct these market failures, to get the right amount of the good or service produced.

External costs occur when not all of the costs involved in the production or consumption of a product are paid by the producers and consumers of that product. Instead, some of the costs shift to others. One example is drunken driving. The consumption of too much alcohol can result in traffic accidents that hurt or kill people who are neither producers nor consumers of alcoholic products. Another example is pollution. If a factory dumps some of its wastes in a river, then people and businesses downstream will have to pay to clean up the water or they may become ill from using the water.

When people other than producers and consumers pay some of the costs of producing or consuming a product, those external costs have no effect on the product’s market price or production level. As a result, too much of the product is produced considering the overall social costs. To correct this situation, the government may tax or fine the producers or consumers of such products to force them to cover these external costs. If that can be done correctly, less of the product will be produced and consumed.

An external benefit occurs when people other than producers and consumers enjoy some of the benefits of the production and consumption of the product. One example of this situation is vaccinations against contagious diseases. The company that sells the vaccine and the individuals who receive the vaccine are better off, but so are other people who are less likely to be infected by those who have received the vaccine. Many people also argue that education provides external benefits to the nation as a whole, in the form of lower unemployment, poverty, and crime rates, and by providing more equality of opportunity to all families.

When people other than the producers and consumers receive some of the benefits of producing or consuming a product, those external benefits are not reflected in the market price and production cost of the product.
Because producers do not receive higher sales or profits based on these external benefits, their production and price levels will be too low–based only on those who buy and consume their product. To correct this, the government may subsidize producers or consumers of these products and thus encourage more production.

Maintaining Competition

Competitive markets are efficient ways to allocate goods and services while maintaining freedom of choice for consumers, workers, and entrepreneurs. If markets are not competitive, however, much of that freedom and efficiency can be lost. One threat to competition in the market is a firm with monopoly power. Monopoly power occurs when one producer, or a small group of producers, controls a large part of the production of some product. If there are no competitors in the market, a monopoly can artificially drive up the price for its products, which means that consumers will pay more for these products and buy less of them. One of the most famous cases of monopoly power in U.S. history was the Standard Oil Company, owned by U.S. industrialist John D.
Rockefeller. Rockefeller bought out most of his business rivals and by
1878 controlled 90 percent of the petroleum refineries in the United
States.

Largely in reaction to the business practices of Standard Oil and other trusts or monopolistic firms, the United States passed laws limiting monopolies. Since 1890, when the Sherman Antitrust Act was passed, the federal government has attempted to prevent firms from acquiring monopoly power or from working together to set prices and limit competition in other ways. A number of later antitrust laws were passed to extend the government’s power to promote and maintain competition in the U.S. economy. Some states have passed their own versions of some of these laws.

The government does allow what economists call natural monopolies.
However, the government then regulates those businesses to protect consumers from high prices and poor service, and often limits the profits these firms can earn. The classic examples of natural monopolies are local services provided by public utilities. Economies of scale make it inefficient to have even two companies distributing electricity, gas, water, or local telephone service to consumers. It would be very expensive to have even two sets of electric and telephone wires, and two sets of water, gas, and sewer pipes going to every house. That is why firms that provide these services are called natural monopolies.

There have been some famous antitrust cases in which large companies were broken up into smaller firms. One such example is the breakup of American
Telephone and Telegraph (AT&T) in 1982, which led to the formation of a number of long-distance and regional telephone companies. Other examples include a ruling in 1911 by the Supreme Court of the United States, which broke the Standard Oil Trust into a number of smaller oil companies and ordered a similar breakup of the American Tobacco Company.

Some government policies intentionally reduce competition, at least for some period of time. For example, patents on new products and copyrights on books and movies give one producer the exclusive right to sell or license the distribution of a product for 17 or more years. These exclusive rights provide the incentive for firms and individuals to spend the time and money required to develop new products. They know that no one else will copy and sell their product when it is introduced into the marketplace, so it pays to devote more resources to developing these new products.

The benefits of certain other government policies that reduce competition are not always this clear, however. More controversial examples include policies that restrict the number of taxicabs in a large city or that limit the number of companies providing cable television services in a community. It is much less expensive for cable companies to install and operate a cable television system than it is for large utilities, such as the electric and telephone companies, to install the infrastructure they need to provide services. Therefore, it is often more feasible to have two or more cable companies in reasonably large cities. There are also more substitutes for cable television, such as satellite dish systems and broadcast television. But despite these differences, many cities auction off cable television rights to a single company because the city receives more revenue that way. Such a policy results in local monopolies for cable television, even in areas where more competition might well be possible and more efficient.

Establishing government policies that efficiently regulate markets is difficult to do. Policies must often balance the benefits of having more firms competing in an industry against the possible gains from allowing a smaller number of firms to compete when those firms can achieve economies of scale. The government must try to weigh the benefits of such regulations against the advantages offered by more competitive, less regulated markets.

Promoting Full Employment and Price Stability

In addition to the monetary policies of the Federal Reserve System, the federal government can also use its taxing and spending policies, or fiscal policies, to counteract inflation or the cyclical unemployment that results from too much or too little total spending in the economy.
Specifically, if inflation is too high because consumers, businesses, and the government are trying to buy more goods and services than it is possible to produce at that time, the government can reduce total spending in the economy by reducing its own spending. Or the government can raise taxes on households and businesses to reduce the amount of money the private sector spends. Either of these fiscal policies will help reduce inflation. Conversely, if inflation is low but unemployment rates are too high, the government can increase its spending or reduce taxes on households and businesses. These policies increase total spending in the economy, encouraging more production and employment.

Some government spending and tax policies work in ways that automatically stabilize the economy. For example, if the economy is moving into a recession, with falling prices and higher unemployment, income taxes paid by individuals and businesses will automatically fall, while spending for unemployment compensation and other kinds of assistance programs to low- income families will automatically rise. Just the opposite happens as the economy recovers and unemployment falls—income taxes rise and government spending for unemployment benefits falls. In both cases, tax programs and government-spending programs change automatically and help offset changes in nongovernment employment and spending.

In some cases, the federal government uses discretionary fiscal policies in addition to automatic stabilization policies. Discretionary fiscal policies encompass those changes in government spending and taxation that are made as a result of deliberations by the legislative and executive branches of government. Like the automatic stabilization policies, discretionary fiscal policy can reduce unemployment by increasing government spending or reducing taxes to encourage the creation of new jobs. Conversely, it can reduce inflation by decreasing government spending and raising taxes. .

In general, the federal government tries to consider the condition of the national economy in its annual budgeting deliberations. However, discretionary spending is difficult to put into practice unless the nation is in a particularly severe episode of unemployment or inflation.
In such periods, the severity of the situation builds more consensus about what should be done, and makes it more likely that the problem will still be there to deal with by the time the changes in government spending or tax programs take effect. But in general, it takes time for discretionary fiscal policy to work effectively, because the economic problem to be addressed must first be recognized, then agreement must be reached about how to change spending and tax levels. After that, it takes more time for the changes in spending or taxes to have an effect on the economy.

When there is only moderate inflation or unemployment, it becomes harder to reach agreement about the need for the government to change spending or taxes. Part of the problem is this: In order to increase or decrease the overall level of government spending or taxes, specific expenditures or taxes have to be increased or decreased, meaning that specific programs and voters are directly affected. Choosing which programs and voters to help or hurt often becomes a highly controversial political issue.

Because discretionary fiscal policies affect the government’s annual deficit or surplus, as well as the national debt, they can often be controversial and politically sensitive. For these reasons, at the close of the 20th century, which experienced years with normal levels of unemployment and inflation, there was more reliance on monetary policies, rather than on discretionary fiscal policies to try to stabilize the national economy. There have been, however, some famous episodes of changing federal spending and tax policies to reduce unemployment and fight inflation in the U.S. economy during the past 40 years. In the early 1980s, the administration of U.S. president Ronald Reagan cut taxes. Other notable tax cuts occurred during the administrations of U.S. presidents John Kennedy and Lyndon Johnson in 1963 and 1964.

Limitations of Government Programs

Government economic programs are not always successful in correcting market failures. Just as markets fail to produce the right amount of certain kinds of goods and services, the government will often spend too much on some programs and too little on others for a number of reasons.
One is simply that the government is expected to deal with some of the most difficult problems facing the economy, taking over where markets fail because consumers or producers are not providing clear signals about what they want. This lack of clear signals also makes it difficult for the government to determine a policy that will correct the problem.

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