[QuesnayJr]

One odd thing about economics is that people will be familiar with roughly half of an introductory textbook, and then think they know everything about the subject. The fact that there is such a thing as "market power" is understood by every economist, and is central to the topic of "industrial organization". Increases in market power are even one of the standard explanations for the business cycle (they call them "markup shocks). Maybe the author knows that, but it's not clear from the post.

[kazinator]

Indeed. You have to read half a textbook and Joel Spolsky's "Camels and Rubber Duckies" before you can start to pretend to know everything.