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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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LAW OF INCREASING OPPORTUNITY COST

The proposition that opportunity cost, the value of foregone production, increases as the quantity of a good produced increases. This fundamental economic principles can be seen in the production possibilities schedule and is illustrated graphically through the slope of the production possibilities curve. It generates a distinctive convex shape, flat at the top and steep at the bottom.

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Today, you are likely to spend a great deal of time at a dollar discount store trying to buy either a country wreathe or galvanized steel storage shelves. Be on the lookout for slow moving vehicles with darkened windows.
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Woodrow Wilson's portrait adorned the $100,000 bill that was removed from circulation in 1929. Woodrow Wilson was removed from circulation in 1924.
"Always dream and shoot higher than you know how to. Don't bother just to be better than your contemporaries or predecessors. Try to be better than yourself."

-- William Faulkner, writer

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