That's exactly what he'd like you to believe. Where did that money come from? Did he just print it himself?
> Musk creating wealth has taken nothing from me. How about you?
Considering that billionaires are actively involved in writing the laws that ostensibly apply to them (see also: regulatory capture), I hardly think that legality should be highest bar that we hold them to. After all, the lords of medieval France acted "legally" when they executed their tenant farmers for failing to pay rent after a bad harvest.
The value created by his company. That value can be turned into money by selling shares of it (stocks), or by borrowing against it (bonds).
Money is created by banks. When banks loan you money, that money is created by a notation in the bank's ledger. But they only loan money on collateral, which would be in this case the value of the company. The money gets destroyed (!) when the loan is paid off. But the value of the collateral remains.