Suppose Bezos burns 80% of his net worth playing with his willy in his garage and decides to wrap it up. He goes straight back to his cushy HF job, 3 years behind in his career if he can't manage to market his experience as some kind of lofty journey landing him a better role than when he left. Let's not pretend it was brave - he had the foundations to take the risks and still come out just fine.