Barriers to entry in the long run

Imperfectly competitive firms protected by important barriers to entry are as: (1) assured of positive accounting profits in the short run. (2) almost certain to succeed in collusively fixing prices at high levels. (3) assured of positive economic profits within the long run. (4) capable to maximize positive economic profit at every possible price. (5) capable to maintain any degree of market power in the long run.

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