I've been near a few of these things. Unless you have lots of money and can scrap the first version or two, they always wash out. I think it's because too many cooks spoil the broth, and there is too much political interference (the mayor's idiot nephew!).
I think the reason you don't here about it more often, is because of polite cover-ups. I know of one big Canadian health initiative that is going 'south', but probably the colossal failure will not be a loud bang, but a quiet whimper.