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多种条件约束决定了真实经济世界的资源配置效率必然偏离古典微观经济学完全竞争均衡模型关于效率问题的推演逻辑。短期边际成本定价趋势与固定成本长期补偿之间的矛盾决定了完全竞争均衡结构内生着不稳定性。“产品竞争度周期假说”在一定程度上证伪了传统的市场结构进化理论。寡头结构有寡头垄断均衡和寡头竞争均衡之别,后者作为市场结构自然演化的结果,能够增进组织绩效和提高行业效率,并实现市场稳定。因此,市场行为基础上自然演进的行业集中度提高是有益的。市场从竞争到垄断都不惠顾社会公平问题。市场结构、组织效率与经济稳定之关系研究无论对产业组织理论创新还是对产业政策制定来讲都具有重要的现实意义。
A variety of conditions and constraints determine the efficiency of resource allocation in the real world is bound to deviate from classical microeconomics complete competition equilibrium model on the efficiency of the deduction logic. The conflict between the trend of short-term marginal cost pricing and the long-term compensation of fixed costs determines the instability of the perfectly competitive equilibrium structure. The “product competitiveness cycle hypothesis” to some extent, falsified the traditional theory of market structure evolution. Oligopoly structures have the balance of oligopoly monopoly and oligopoly competition. The latter, as a result of natural evolution of market structure, can improve organizational performance and industry efficiency and achieve market stability. Therefore, it is beneficial for industries to concentrate on the natural evolution based on market behavior. Market competition from the monopoly will not patronize social justice issues. The study of the relationship between market structure, organizational efficiency and economic stability has important practical significance both for the theoretical innovation of industrial organization and the formulation of industrial policy.