I think the big answer here is that there is something that causes both not caring about school and succeeding in "innovation" and business. It's called "wealth" and is the most effective predictor of any kind of success.
Americans are always looking for get rich quick schemes. We love to hear the story, "working hard is for suckers, just have a good idea one time and you'll be a billionaire" -- it lets us blame the poor for being poor (the cornerstone of American economic culture) because they obviously just aren't smart enough to come up with a good idea. We like to say "getting As is for suckers, you don't need it" because we want to feel better than those nerds in school who wasted their energy and time trying hard.