Or Johan van Oldenbarnevelt, the guy who started the Dutch East India company, which adjusted for inflation was worth over $8.2 trillion.
Modern companies have nothing on what entrepreneurs did in the past and how much money they made. It doesn't matter how many markets Elon Musk "disrupts" nothing he can do will ever match the impact that the Dutch East India company had on the world: https://en.wikipedia.org/wiki/Dutch_East_India_Company