Musk, like Bezos, never had and never will have a fortune of $200 billion+, for a stupid reason - this is market capitalization, not cash in the accounts. It is worth any of them to sell a large stake and the shares immediately fall. Therefore, in order to sell at least 100 billion in cash, they will have to carefully and patiently sell into the market for years, which they quietly do.
Anyone who has personally traded stocks with low liquidity (and here is a direct analogy due to very large stakes) understands this very well. It is necessary to sell a little stock packets, trying to manipulate the price back up so that it does not slip, which is what trusted market makers do.
The whole world has long turned into a psychiatric hospital and outright lies on every corner and spitting dust from scratch.
Do you really think he was is the only person worth over 200 billion? How about look into the Saudis and of course Vladimir Putin. They aren't public obviously but they have more and it's dirty oil money and the Saudis.
The sole rich inhabitant of the US$200 billionaires club has fallen out of Bloomberg's list after the recent riot in Tesla's stock induced by Elon Musk's acquisition of Twitter. All the while Tesla's badge has climbed up 32% to become the third most valuable car brand in the world.