Market Power, Monopoly, and Mergers: Competitive Assessments Beyond Market Shares
3 February 2010
By Dr. Fabien Curto Millet
The concept of market power lies at the heart of competition assessments. In practice, market shares are often used to measure market power. While market shares can provide useful information in this regard in certain circumstances, they feature important shortcomings in numerous contexts and may then give a biased representation of actual market power. In this article from the Revue Concurrences, NERA Senior Consultant Dr. Fabien Curto Millet reviews a number of limitations of market shares encountered in specific cases. He also sets out some analytical tools for competition assessments of market power going beyond market shares, including econometric demand analysis, bidding studies, customer surveys, and merger simulation. The article is published in French, and is based on Dr. Curto Millet's presentation at a recent Droit & Economie de la Concurrence conference in Paris, which also featured Professor Emmanuel Combe, Member of the Autorité de la Concurrence and Professor of Economics at the Université de Paris I, and Olivier d'Ormesson, head of Linklaters' competition team in Paris.
View abstract and text on the Revue Concurrences website, or download a PDF of the article by using the link below.
Citation: Fabien Curto Millet, Olivier d'Ormesson, Stanislas de Guigne, Conference: Competition, monopoly and market power, Concurrences, N° 1-2010, n°30120, www.concurrences.com.
