The possible existence of a link between the structure of firms' equity and profitability is a recurrent question among economists. The primary objective of this article is to provide a critical analysis of the two most recent hypotheses on the subject, one put forward by Demsetz, and the other...

This paper seeks to emphasize that Williamson?s explanation of vertical integration is absolutely not empirically validated, even though it has been endorsed as such by numerous economists. In this framework, we first analyse the eight case studies that Williamson himself puts forward to support...

Une analyse sur la nature fondamentale de l'entreprise, la productivité des firmes capitalistes, le lien entre structure du capital et profitabilité des firmes, le degré d'intégration verticale des entreprises, les raisons d'une compétitivité durable.