You would have to pay tax, and you wouldn't be able to, and it would be your own stupid fault. That's not what's happening. Bezos isn't being paid billions and choosing to put it into Amazon stock. He's just maintaining ownership of the stock while it goes up in value, but that's imaginary money; it doesn't exist until that stock is sold. It's not like real money that was spent on stocks, Bezos has never seen the amount of money that he is worth. If you bought a stock worth $12.37, and it grew to $430,282, would you be able to pay tax on even a modest percent tax on that increase without selling it? Is being forced to sell your possessions to pay taxes a tenable system? If your house jumped $100,000 in value in a housing bubble, would you be able to afford it if that was taxed as income? The market value of your possessions are dependent on what other people would pay for them. Do you really want a world where if other people are willing to pay enough for your possessions, the government comes in and taxes you on that value, whether or not you can afford it? Do you like the idea of being forced to sell what you own to pay the taxes on it? That's what taxing wealth would do. It would not work out well.