I think part of the problem is that there has been 20+ years of thinking low fat is the way to go for health. All the large corporations have tailored to that somewhat out of necessity, and of course have made money at it. The major hindrance for the Atkins WOE in my opinion, is that you can't just reverse 20 years of thinking overnight. Yes, some of these corporations may be heavily involved in politics and drive some of the resistance that way, but I think a lot of it has to do with being scared to do something new, and to admit that someone was wrong for all that time. ANd finally, no one wants to take the blame for feeding the "wrong" information to the public. I think we are going to end up with a situation similar to what finally happened in the tobacco industry before the resistance goes away.