I love the two critiques listed in the comments. One avoids critiquing the quote altogether and the other thinks the world needed the H-Bomb!

Whether you agree with the whole of Friedman's work or not, he's being as honest and true about the situation at hand as possible; people are at the heart of the problem and while capitalism is flawed, it isn't going to take more people looking over shoulders to fix things, because they have their own motives and ambitions.