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MARKET SHARE: The fraction of an industry's total sales accounted for by a single business. In general, market share is a "first-guess" indicator of a firm's market control. If, for example, a company has a market share of 100 percent (that is, a monopoly), then you can rest assured it has a substantial amount of market control. A company with a 25 percent market share has less, but still notable, market control. In fact, when you get right down to the bottom line, the phrase "market share" is only worth mentioning for oligopolistic firms with a significant degree of market control. There really is no market control for a monopolistically competitive firm with a 0.00000001 percent market share.

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THIRD RULE OF INEQUALITY

The third of seven basic rules of the economy, stating that resources, income, and wealth are not equally distributed. Some people have more resources, income, and wealth and some people have less. Such inequality is due to natural abilities, acquired talents, market control, political power, and sheer luck.

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Today, you are likely to spend a great deal of time wandering around the downtown area trying to buy either an AC adapter that works with your MPG player or rechargeable batteries. Be on the lookout for jovial bank tellers.
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Paper money used by the Commonwealth of Massachusetts prior to the U.S. Revolutionary War, which was issued against the dictates of Britain, was designed by patriot and silversmith, Paul Revere.
"I can't change the direction of the wind, but I can adjust my sails to always reach my destination."

-- Jimmy Dean

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Journal of Public Economics
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