It’s not a tax on the business. If Elon musk is forced to sell a percentage of his shares in Tesla that’s not going to change their bottom line, it just means someone else, other than him is buying that ownership.

It’s a tax on the billionaires just like it’s intended, and they are forced to either pay themselves a salary that will also be taxed, just like poor people, in order to pay the capital gains tax. They can’t just borrow money against their gains and pretend that it’s fair that they don’t pay any taxes “because Elon Musk has no income”.