Look, The Beatles were a seriously backed bidness endeavor to bring US dollars into Britain in a successful effort to create a good export industry at the time the country sorely needed same.
The book might just be more of same, actually.
The effect of the Marshall Plan was far reaching and also imitated by nations other than the ones that lost WWII.
Stating that something was a business endeavor by private individuals looking for success, and that those private individuals were surely aware of the effects of the Marshall Plan and very likely to have paid heed now has been turned into "Mac said it was the Gummint!" ...
As for whoever said or wrote whatever after the fact of the arrangement, I would point out some of the claims John Lennon made as to his input and some of his rash communications in writing to Paul, Linda and Sir Martin as evidence that nobody today can even get to what obviously was the case. As for Martin, seems to me that his responses have tended towards the gentlemanly side of things, such is the case of the true gentleman.
But I won't just say that "I read it once" here's a link to it:
http://music.yahoo.com/blogs/stop-the-pr...-192300104.html --Mac