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沉淀资本可以构成市场进入壁垒,固定成本决定进入壁垒的有效性。本文综合考虑沉淀资本和固定成本对市场进入均衡的影响,通过建模分别对沉淀资本不贬值、小幅贬值及大幅贬值的情况进行讨论,总结了形成不同市场进入均衡——自然垄断、人造垄断及寡头垄断的具体条件,得出沉淀资本只能影响在位者的策略性行为,它通过固定成本间接影响市场进入均衡,而对于固定成本而言并非越大越容易形成市场进入壁垒,市场进入均衡的形式最终取决于沉淀资本和固定成本的综合作用。本文为判断垄断的具体形式提供理论依据,并对反垄断法的实施具有指导意义。
Precipitation capital can constitute the market entry barriers, fixed costs determine the effectiveness of barriers to entry. In this paper, we consider the influence of precipitation capital and fixed cost on the equilibrium of market entry. We discuss the situation of not depreciation, slight devaluation and sharp depreciation of precipitation capital through modeling respectively, and conclude the formation of a balanced market entry equilibrium - natural monopoly, artificial monopoly and The concrete conditions of oligopoly means that the settling capital can only influence the strategic behavior of the incumbent. It indirectly affects the equilibrium of the market through fixed costs. However, it is not easy for the fixed cost to form a market entry barrier and the market is balanced The form ultimately depends on the combined effect of settling capital and fixed costs. This article provides a theoretical basis for judging the specific form of monopoly, and is of guiding significance for the implementation of antitrust law.