I've thought about this too, and something occurs to me: Big corporations attract people who are really good at making money. Some of us are good at tech, others at music, and there's a certain group of people whose gift is setting aside all of those "interesting" things and focusing on making money. And not by doing spectacular things like inventing Facebook, but just by grinding away at it, year after year, making incremental improvements to things. I just can't bring myself to be interested in doing that.

I work at a F250, and I once asked my boss: "Why does the parent company allow our company to exist, when we seem to be steeped in incompetence?" He said to me: "Because we make a shit ton of money."