Naming the problem
Plenty of good anecdotes on the way companies use their position as dominent buyers or sellers to manipulate markets, pocket unfair shares of wealth, and generally make life worse for everyone who isn't their execs and shareholders. The collective solutions proposed all seem like reasonable starting points, too—but while I agree with their point that systemic problems require systemic solutions, I don't feel like I left the book with a starting point of how to work towards that change.
Maybe just naming the problem and talking about it is a sound enough starting point. Chokepoint Capitalism is a useful term, evocative and intuitive to understand, but also expansive enough to capture a whole world of corporate corruption. If it bleeds its way into more general discourse, that can only be a good thing.