The only way remaining to truly protect freedom of expression and, in turn, our democracy, is by building free and open internet.In a meeting of a House antitrust subcomittee last week, members took turns lamenting the market supremacy of Big Tech — and making pledges to curtail it. Bipartisan consensus on this is refreshing, and it is in fact the charge of government to ensure free markets by breaking up monopolies.Americans, however, should not put their trust in princes. While these hearings make for good campaign ads, Congress has a bad track record of helping Americans, and American innovators can...