Andrew, I fully agree with you. We are up against serious obstacles. They will not be easily overcome and possibly won't be overcome but, where we can make a difference, it is a difference very much worth making.
Ed, we're up against more than just advertising. As Andrew and I have pointed out, you can't discount the political/lobbying machine. High fructose corn syrup is the most popular sweetener on the market for a simple reason, it's dirt cheap. It's dirt cheap for a simple reason, the huge subsidies that go into it. It gets those subsidies for a simple reason, campaign contributions and millions in lobbying dollars flowing from agribusiness to Washington. Similar things could be said about the fact that almost every community in the US has a convenient supply of junk food/fast food but many have no convenient supply of healthy food.