The two-sided markets (Nasse Seminar - Paris, 15th December 2005)

*This article is an automatic translation of the original article, provided here for your convenience. Read the original article. Created at the end of the 1980s within the Forecasting Department, the Philippe Nasse seminar was first called the "Industrial Economics seminar" and then the "Competition seminar". For several years now, it has been co-organized with the French Competition Authority, first under the name of "DGTPE-Competition" seminar and finally, since January 2009, under the current name of "Philippe Nasse seminar". The principle consists in presenting and comparing the points of view of an economist and a lawyer on a subject of common interest relating to competition issues. In fact, the judge increasingly calls upon the economist to characterize the infringements of