Articles 101 and 102 TFEU and the corresponding national competition rules concerning anticompetitive multilateral and unilateral conduct as well as merger control have as their objective the protection of undistorted competition on the market. This Regulation pursues an objective that is complementary to, but different from that of protecting undistorted competition on any given market, as defined in competition-law terms, which is to ensure that markets where gatekeepers are present are and remain contestable and fair, independently from the actual, potential or presumed effects of the conduct of a given gatekeeper covered by this Regulation on competition on a given market. This Regulation therefore aims to protect a different legal interest from that protected by those rules and it should apply without prejudice to their application.