The Digital Markets Act is avant-garde in that it breaks the codes of the classic competitive method. Indeed, by prohibiting certain behavior ex ante, whereas the traditional method evaluates anticompetitive behavior ex post, it marks a break with the traditional tools of regulation of competition. The Digital Markets Act sets up as a real arm of the sovereignty of the Union and avoids a dispossession of a new kind. Since 2015, this digital package has adapted competition law to the changing paradigms.