The article analyses the European Commission's initiative to introduce a new, complementary tool to EU competition law. The initiative is one of the measures aimed at making sure that competition policy and rules are fit for the modern economy. The new tool would enable the Commission to conduct market investigations on structural problems, with the possibility of imposing remedies. The article presents some comments on the legal basis of the initiative, selection of the appropriate option, and issues related to the principle of proportionality and remedies. It is postulated to find a solution that would eliminate the gaps in enforcement while maintaining a clear legal framework and ensuring effective judicial control.