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BARRIER TO ENTRY: 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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MARGINAL FACTOR COST CURVE, MONOPSONY

A curve that graphically represents the relation between marginal factor cost incurred by a monopsony for hiring an input and the quantity of input employed. A profit-maximizing monopsony hires the quantity of input found at the intersection of the marginal factor cost curve and marginal revenue product curve. The marginal factor cost curve for a monopsony with market control is positively sloped and lies above the average factor cost curve.

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Today, you are likely to spend a great deal of time waiting for visits from door-to-door solicitors seeking to buy either a how-to book on home repairs or a large, stuffed kitty cat. Be on the lookout for a thesaurus filled with typos.
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The first U.S. fire insurance company was established by Benjamin Franklin in 1752 in Philadelphia.
"You need just the right amount of ambition . . . If you have too little ambition, you don't push or work hard. If you have too much ambition, you put yourself ahead of others, elbow them out of your way. "

-- Andy Grove, Intel chairman and co-founder

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