[fre] In the "post 1992" prospect, the achievement of the Great Market requires a process of deregulation, i.e. the removal of market segmentations. This does not mean the end of all regulation, but the transition from state intervention to market regulation. Through the application of the theory of industrial structures to common market integration practices, this paper attempts to show the need ... [Show full abstract] to enforce the distinction between "dérégulation" and "déréglementation". Deregulation does not imply no rules, but new rules. It therefore is not the ultimate aim, but the means toward the achievement of internal consistency through new common rules.