Consumer protection isn't just about prices, and antitrust isn't just about consumer protection. In United States v. Microsoft [0], Microsoft was found to have

Consumer protection isn't just about prices, and antitrust isn't just about consumer protection. In United States v. Microsoft [0], Microsoft was found to have abused its dominance as the maker of Windows to compete unfairly against Netscape, which was free (as was IE), among others. The "browser wars" was Microsoft blocking entry into a market where the price was already zero. [0] https://en.wikipedia.org/wiki/United_States_v._Microsoft_Corp._(2001) https://en.wikipedia.org/wiki/United_States_v._Microsoft_Cor...