Books by Thomas Philippon

That is the new book by Thomas Philippon , and perhaps the title is a bit misleading, as the book covers both regulatory barriers and natural economic forces behind higher concentration levels.  I am a big fan of Philippon’s work, but I am not so convinced by his arguments in this book.  Most of all, he is trying to argue for systematically greater monopoly power in the American economy, but he is reluctant to provide much evidence for output restriction , the sine qua non of market power.