Judging by all he's accomplished at Microsoft, I'm sure Scott could successfully lead a team to solve his problem and bring a product to market. But he doesn't.
I (luckily) would not have use for such a product. If he doesn't care enough to tackle the problem, why should I?
Same goes for Obesity. Most of it could be controlled by changes in diet and behavior. If people affected can't be bothered, why should I care?