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ENTRY BARRIER: An institutional, government, technological, or economic restriction on the entry of firms into a market or industry. The four primary barriers to entry are: resource ownership, patents and copyrights, government restrictions, and start-up costs. Barriers to entry are a key reason for market control and the inefficiency that this generates. In particular, monopoly, oligopoly, monopsony, and oligopsony often owe their market control to assorted barriers to entry. By way of contrast, perfect competition, monopolistic competition, and monopsonistic competition have few if any barriers to entry and thus little or no market control.

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GOVERNMENT FAILURES

Inefficiencies in the allocation of resources attributable to imperfections in the operation of governments. Government failures are based on the utility-maximizing behavior of politicians, voters, nonvoters, special interest groups, and government employees. The identification and analysis of government failures is central to the study of public choice and offers something of a counterbalance to government actions designed to address the inefficiencies of market failures.

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YELLOW CHIPPEROON
[What's This?]

Today, you are likely to spend a great deal of time surfing the Internet wanting to buy either a pair of designer sunglasses or looseleaf notebook paper. Be on the lookout for gnomes hiding in cypress trees.
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On a typical day, the United States Mint produces over $1 million worth of dimes.
"Only great minds can afford a simple style."

-- Stendhal, writer

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National Association of Business Brokers
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