Watch until the end.
The same can be said about Elon Musk. He didn't create PayPal. His payment company got merged into PayPal and then he got bought out.
Tesla is valuable based on share price and subsidies from the US government. He didn't create the company and ousted the founders.
Space X is basically a private contractor paid for by the US government.
A lot of these billionaires aren't but on paper.