Anyone interested in this sort of thinking from the economic side should give The Curse of Bigness: Antitrust in the New Gilded Age by Tim wu a read. It's a call to action in favor of the neo-Brandeis movement, which is trying to change how we think of antitrust in the United States. Key to neo-Brandeisian anti-trust is a shift away from consumer welfare, and a shift towards a focus on a firms size and power