Asymmetric Multiproduct Firms, Profitability and Welfare

Asymmetric Multiproduct Firms, Profitability and Welfare
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非对称多产品公司、盈利能力和福利

DOI:
10.1111/j.1467-8586.2008.00300.x
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发表时间:
2009
期刊:
ERN: Monopoly
影响因子:
--
通讯作者:
George Symeonidis
George Symeonidis
中科院分区:
--
文献类型:
--
作者:
George Symeonidis

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在线性需求下的差异化多产品古诺双寡头垄断中,如果产品差异化程度不高或产品总数很大,当产品在企业间的分布变得更加不对称时,行业利润通常会福尔斯(即使集中度上升)。消费者剩余和总体福利总是随着不对称程度的增加而下降。这些结果与传统的观点形成鲜明对比,即企业异质性的影响以及集中度与行业利润之间的联系。
In a differentiated multiproduct Cournot duopoly with linear demand, industry profit usually falls (even though concentration rises) when the distribution of products across firms becomes more asymmetric, if the products are not very differentiated or the total number of products is large. Consumer surplus and overall welfare always fall as the degree of asymmetry increases. These results contrast with the conventional wisdom on the effects of firm heterogeneity and the links between concentration and industry profits.
DOI: 10.2139/ssrn.1475707
发表时间: 2006-12
期刊: International Trade
影响因子: --
作者:
A. Bernard;S. Redding;Peter K. Schott
通讯作者: A. Bernard;S. Redding;Peter K. Schott