If all existing firms and all potential firms have the same cost curves,there are no inputs in limited quantities,and the market is characterized by free entry and exit,then the long-run

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In the long run, under the given conditions, all firms would have an incentive to enter or exit the market until the minimum of long-run average cost is achieved. Therefore, the market supply curve would be horizontal at this point, as all firms would produce at the same efficient scale, and price would be equal to the minimum of long-run average cost.

If All Existing Firms and All Potential Firms Have the Same