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The "equality of opportunity" idea of fairness claims
Oligopoly
A market structure dominated by a small number of large firms, leading to limited competition and often strategic behavior among firms.
Oligopoly
A market structure in which a few firms dominate, and each one can significantly affect prices and other market factors.
Four-firm Concentration Ratio
An indicator of the extent to which the four largest firms dominate an industry, measured by their combined market share.
Herfindahl Index
A measure of market concentration, calculated by summing the squares of the market shares of all firms in the market.
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