Elon doesn't have a pile of cash, and it wouldn't be possible to convert his assets into cash either (without an incredible discount). This is true for most billionaires. In fact this very fallacy is part of what I'm alluding to with "we need to educate better".
So while fun thought experiments are excellent selling points, they aren't actually grounded in reality.
So while fun thought experiments are excellent selling points, they aren't actually grounded in reality.