Endogenous Determination of Strategies in a Kantian Duopoly

Endogenous Determination of Strategies in a Kantian Duopoly
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康德双头垄断中战略的内生决定

DOI:
10.1007/s10842-022-00394-8
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发表时间:
2022
期刊:
Journal of Industry, Competition & Trade
影响因子:
--
通讯作者:
Yasuhiko Nakamura
Yasuhiko Nakamura
中科院分区:
--
文献类型:
--
作者:
Keisuke Kondo;Yasuhiko Nakamura

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我们重新审视了双寡头市场中各厂商策略的内生决定问题。特别是,我们专注于每个公司的行为作为一个康德双头垄断的情况。在一个康德的双头垄断与替代品,我们表明,Bertrand竞争可以唯一地观察到均衡,如果每个公司的边际成本是高相对于任何程度的同质性之间的产品由每个公司生产。相反,古诺竞争也可以在均衡中观察到,如果它的边际成本相对于同质化程度是低的。相反,在康德双寡头互补,我们证明了两个不对称的市场结构相对于每个边缘的战略可以观察到在均衡,如果它的边际成本相对于同质化程度高。然而,古诺竞争也可以在均衡中观察到。此外,在康德双寡头垄断中,我们发现,当产品是互补品时,使均衡市场结构与社会优选市场结构相一致的同质程度和每个企业的边际成本的范围比当产品是替代品时大。因此,在康德的双头垄断中,每个企业的自由决定其战略应该被允许,而不是当货物是互补品时,货物是替代品。
We revisit the endogenous determination problem of strategies for each firm in a duopoly market. Particularly, we focus on the scenario wherein each firm behaves as a Kantian duopoly. In a Kantian duopoly with substitutes, we demonstrate that Bertrand competition can be uniquely observed in equilibrium if each firm’s marginal cost is high relative to any degree of homogeneity between goods produced by each firm. Conversely, Cournot competition can also be observed in equilibrium if its marginal cost is low relative to degree of homogeneity. Conversely, in a Kantian duopoly with complements, we demonstrate that the two asymmetric market structures relative to each rim’s strategy can be observed in equilibrium if its marginal cost is high relative to the degree of homogeneity. Cournot competition, however, can also be observed in equilibrium. Furthermore, in a Kantian duopoly, we find that the area of the degree of homogeneity and each firm’s marginal cost such that the equilibrium market structure(s) can coincide with the socially preferable market structure(s) is larger when the goods are complements than when they are substitutes. Consequently, in a Kantian duopoly, each firm’s free determination of its strategy should be permitted rather when the goods are complements than when goods are substitutes.
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