La théorie williamsonienne de l'intégration verticale n'est pas vérifiée empiriquement
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 his model. Then, we scrutinize further empirical works, in particular the more recent ones. The originality of our works lies not so much in its overall conclusion which merely confirms the negative evaluation already expressed by H. Simon and R. Coase, but in the strengthening of their position as to the validity of Williamson’s theory. Classification JEL : D23, L22
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