1. Monopolistic Competition
... quite small. There is free entry and it is at least possible that people know enough about their hairdressing options so that the "sufficient knowledge" condition is fulfilled. But the products of different hairdressers are not perfect substitutes. At the very least, their services are differentiated by location. A hairdresser in Miami Downtown is not a perfect substitute for a hairdresser ... hairdressers may cut men's hair. Are hairdressers and barbers part of the same industry, or different industries? There really is no final answer to this question, and some economists have avoided ...
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