I'm actually making a very simple point. You said most of Jeff Bezos wealth is imaginary / not real. But he's proven that he can turn it into cash at a rate of at least $1B per year.

And again, he only owns 9% of Amazon. Of course if he dumped all of that stock at once the price would go down, but Bill Gates sold almost all of his Microsoft stock for cash and Microsoft stock has continued to go up. Jeff Bezos could certainly do the same and come out the other end with around $260B in cash - but he has zero reason to go do that..

Here's another way to look at this: do you have a retirement account? Is the money in there imaginary? If not, why not?