Comment by autoexec

billionaires have a lot of money tied up in the market but they aren't cash poor. They typically keep hundreds of millions in cash on hand. Supposedly, Jeff Bezos keeps over $9 billion in cash. Their day to day lifestyle doesn't change one bit when the market drops. They don't have to stop buying the groceries they normally do just because a stock drops by 10%. Buying up some stock while it's down when they know they can sell it back when it jumps back up is just free money.

Even if they somehow ran out of money in all of their accounts (and that's extremely unlikely) and at the same time lost all the money they had that wasn't in stocks they could very easily borrow money.