The ADLC is the referee of the competitive game. It intervenes to ensure that the game runs smoothly, a priori by sanctioning prohibited actions. Since the adoption of the LME, France has succeeded in modernizing competition regulation. Doctrine is now a crucial necessity for market players, insofar as it allows the Authority to go beyond its educational mission and adopt a very proactive regulatory approach. If it is true that the doctrine attests to the unilateral and institutional position of the Authority, it thus seems innovative to move towards a doctrine that is provoked or even negotiated with market players. The influence of the doctrine extends to the public authorities in a form that is both organic and functional. The doctrine constitutes a guide to legislative reform for the government and parliament, of which the Macron law is the most striking example. Thus, it shares