It is an engaging read, I wish there was some kind of academic project to see where we are at in 2019 and onwards with the data points brought up inside the book.
As others have noted the intellectuals, Chomsky & Herman, failed to illustrate an internal logic and thus have neither a theory or a working model for their ideas contained herein.
Nonetheless, they bring up a collection of interesting case studies and points. I hope someday this is developed into a working theory. Right now, I'd call it a conjecture.
Paperback, 412 pages
Published Dec. 3, 1994 by Vintage.