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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 DEMAND The inverse relationship between demand price and the quantity demanded, assuming ceteris paribus factors are held constant. This fundamental economic principle indicates that a decrease the price of a commodity results in an increase in the quantity of the commodity that buyers are willing and able to purchase in a given period of time, if other factors are held constant. The law of demand is one of the most important principles found in the study of economics.
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PURPLE SMARPHIN
[What's This?]
Today, you are likely to spend a great deal of time looking for a downtown retail store looking to buy either several magazines on time travel or 500 feet of telephone cable. Be on the lookout for pencil sharpeners with an attitude.
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This isn't me! What am I?
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In the early 1900s around 300 automobile companies operated in the United States.
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"Don't be afraid if things seem difficult in the beginning. That's only the initial impression. The important thing is not to retreat; you have to master yourself." -- Olga Korbut, Gymnast
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AS-AD
Aggregate Supply-Aggregate Demand Model
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