Degree of product differentiation, antitrust enforcement and cartel stability

IF 1.6 4区 经济学 Q2 ECONOMICS Journal of Economics Pub Date : 2023-12-20 DOI:10.1007/s00712-023-00851-w
Williams Huamani, Marcelo José Braga, Lucas Campio Pinha
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Abstract

This paper examines the effect of antitrust enforcement on the stability of the quantity-setting cartel at different levels of horizontal product differentiation. We derive an incentive compatibility constraint that allows us to examine the effect of antitrust enforcement on cartel stability at different levels of horizontal product differentiation. We verified that both the antitrust enforcement and the degree of product differentiation affect cartel stability. We found that the relationship between the degree of product differentiation and cartel stability is increasing—if the products are more homogeneous, the cartel is less stable. Next, we prove that antitrust enforcement is more efficient (that is, its impacts more intense) in destabilizing the cartel if its products are highly differentiated, i.e., the cartel under antitrust enforcement is more stable when its products tend to be homogeneous.

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产品差异化程度、反垄断执法和卡特尔稳定性
本文研究了反垄断执法对不同水平产品差异化下数量设定卡特尔稳定性的影响。我们推导出一种激励相容约束,从而可以考察反垄断执法对不同水平产品差异化程度下卡特尔稳定性的影响。我们验证了反垄断执法和产品差异化程度都会影响卡特尔的稳定性。我们发现,产品差异化程度与卡特尔稳定性之间的关系是递增的--如果产品同质化程度越高,卡特尔的稳定性就越低。接下来,我们证明,如果卡特尔的产品高度分化,反托拉斯执法在破坏卡特尔稳定方面的效率更高(即影响更强烈),也就是说,当卡特尔的产品趋于同质化时,反托拉斯执法下的卡特尔更稳定。
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来源期刊
CiteScore
1.70
自引率
11.80%
发文量
38
期刊介绍: Specializing in mathematical economic theory, Journal of Economics focuses on microeconomic theory while also publishing papers on macroeconomic topics as well as econometric case studies of general interest. Regular supplementary volumes are devoted to topics of central importance to both modern theoretical research and present economic reality. Fields of interest: applied economic theory and ist empirical testing.Officially cited as: J Econ
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