Rent-seeking behavior can be incentivized by monopolies, foreign trade restrictions and state subsidies. Governments can also create monopolies in an attempt to reduce inefficiency in markets. Companies can also exhibit rent-seeking behavior even if not explicitly incentivized to do so. For example, a manufacturer that has no direct competitors can limit its output, thereby producing artificial
scarcity. This scarcity, in turn, is used as justification for increased prices. Monopoly creation is not always a strict market phenomenon. Voters, government officials, and government employees can be persuaded to allow the creation or protection of monopolies due to various incentives, because of actions by special interest groups that can impose costs on the general public, or because social goals other than economic efficiency are being pursued. Government granted monopolies constitute a fair portion of monopolized industries.
Natural monopolies A natural monopoly occurs when a single company dominates the market by having the lowest prices or the products most in demand by consumers. Fixed costs and variable costs can both be factors. If the fixed costs associated with providing a service or product are very high, it may not make economic sense for new competitors to enter the market. For example, it is rarely worthwhile to build second or third tram networks in cities where tram infrastructure already exists. Because the fixed cost of construction is too high, the expected return is not worth the investment. According to economist
Arnold Harberger, the loss of
deadweight from monopolies in the US manufacturing industry is only 0.1% of
GNP, so the real problem is not the existence of monopolies. The real problems are the social and opportunity costs. These include time and resources expended by lobbyists, consumers, and producers who might otherwise redirect those resources to other, more productive activities. In the case of
natural monopolies in private hands, regulation can be introduced to dissolve or restructure monopolies. The government can also regulate prices in certain sectors where natural monopolies develop. This can be done directly by setting the price (for example, the price of rail or gas) or by regulating the return (for example, in the case of telephone services). Whatever method is used, the goal is to lower prices to cost levels. Some economists, such as Thomas Sowell, Walter Williams, and Wayne Winegarden argue that price controls have disastrous economic effects or are otherwise immoral.
Alternative interpretation Dennis Thompson notes, "Corruption is bad not because money and benefits change hands, and not because of the motives of participants, but because it privatizes valuable aspects of public life, bypassing processes of representation, debate, and choice." ==Criticism==