The OECD published an interesting piece of work on monopolisation: Guidance to Business on Monopolisation and Abuse of Dominance. Interestingly there are only limited number of countries that have made contributions, and Hungary is not within them, although usually it is.
Abstratct: This Working Party 3 roundtable focused on how competition authorities can provide businesses with effective guidance on monopolization and abuse of dominance. While some uncertainty over the reach of rules prohibiting anticompetitive unilateral conduct is inevitable, authorities responsible for the enforcement of antitrust laws must strive to provide as much transparency as possible as to their enforcement policies so that businesses can plan and invest with some predictability. Uncertainty as to the reach of unilateral conduct rules may induce companies to refrain from business practices which are lawful and competitively neutral (if not pro-competitive).