We study the implementation of reasonably efficient operator margin squeeze tests by National Regulatory Authorities in European telecommunications markets. We provide a theoretical framework in which we show how regulatory authorities deal with the asymmetries between the entrants and the...

The paper discusses economic theories of harm for anti-competitive margin squeeze by unregulated and regulated vertically integrated firms. We review both predation and foreclosure theories, as well as the mere exploitation of upstream market power. We show that foreclosure provides an...

This paper studies the implementation of Reasonably Efficient Operator margin squeeze tests by National Regulatory Authorities in European telecommunications markets. It provides a theoretical framework which shows how regulatory authorities deal with the asymmetries between entrants and...

Network neutrality constitutes today an emerging branch of economic analysis. This article explores this literature to open the discussion to new economic issues observed from the industry's practical experience that have not been yet addressed by the existing literature.