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通过对市场结构理论演变过程的回顾,认为以SCP范式为基础的传统市场结构分析框架越来越不适应于当前日益复杂的经济环境。基于此,本文提出了网络型市场结构的概念,分析了网络型市场结构的特征,讨论了网络结构型市场结构的分类,并提出了网络型市场结构的一般模式。接着,构建了网络型寡头垄断市场结构模型,分析了该模型的四个特性。之后,对2×2网络型寡头垄断市场结构存在的八种策略组合进行了合并整理,求出了在现实中经常采用的四种不同的策略组合下的Cournot产量均衡解、价格均衡解以及实现均衡时的利润。最后,通过一个算例对各个Cournot均衡解的特性进行了分析,并比较了四种策略组合的优劣。
Through the review of the evolvement of the theory of market structure, it is considered that the traditional market structure analysis framework based on the SCP paradigm is increasingly unsuited to the current increasingly complicated economic environment. Based on this, this paper presents the concept of network-based market structure, analyzes the characteristics of network-based market structure, discusses the classification of network structure-based market structure and puts forward the general model of network-based market structure. Then, we construct a network oligopoly market structure model, and analyze the four characteristics of the model. After that, the eight strategies combinations exist in the 2 × 2 network oligopolistic market structure, and the Cournot production equilibrium solution, the price equilibrium solution and the realization under the four different strategy combinations which are often used in reality are obtained Balanced profits. Finally, an example is given to analyze the characteristics of each Cournot equilibrium solution and to compare the advantages and disadvantages of the four strategies.