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An ancillary barrier to entry is a cost that does not constitute a barrier to entry by itself, but reinforces other barriers to entry if they are present. [ 1 ] [ 7 ] An antitrust barrier to entry is "a cost that delays entry and thereby reduces social welfare relative to immediate but equally costly entry". [ 1 ]
Barriers to entry are advantages that existing, established companies have over new entrants. [4] [5] Michael E. Porter differentiates two factors that can have an effect on how much of a threat new entrants may pose: [6] Barriers to entry The most attractive segment is one in which entry barriers are high and exit barriers are low.
Like perfect competition, under monopolistic competition also, the companies can enter or exit freely. The companies will enter when the existing companies are making super-normal profits. With the entry of new companies, the supply would increase which would reduce the price and hence the existing companies will be left only with normal profits.
The diagram on the right illustrates both effects, using the standard approach based on the notion of economic surplus. According to this notion, the workers' economic surplus (or net gain from the exchange) is given by the area between the S curve and the horizontal line corresponding to the wage, up to the employment level.
Barriers to entry restrict the threat of new entrants. If the barriers are high, the threat of new entrants is reduced and conversely if the barriers are low, the risk of new companies venturing into a given market is high. Barriers to entry are advantages that existing, established companies have over new entrants. [4] [5] [7]
Thus, for example, a monopoly protected by high barriers to entry (for example, it owns all the strategic resources) will make supernormal or abnormal profits with no fear of competition. However, in the same case, if it did not own the strategic resources for production, other firms could easily enter the market, which would lead to higher ...
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In addition to barriers to entry and competition, barriers to exit may be a source of market power. Barriers to exit are market conditions that make it difficult or expensive for a company to end its involvement with a market. High liquidation costs are a primary barrier to exiting. [15] Market exit and shutdown are sometimes separate events.