Working at a startup is hard. The hours are long, the stress can be brutal, and there is no guarantee of success. In fact, the odds for a raw startup (which is what Google was when Charlie joined) are very much against you. I have no idea what Google’s deal with Charlie was, but typically you take a pay cut for a shot at the brass ring. Charlie didn’t make $20M for cooking, he made $20M for taking the risk that the company he was joining would fail and that he could end up five years older, unemployed, and with nothing to show for his trouble.