Mostly OT: I highly doubt Elon is the richest person in the world.
Unlike the self-made upstarts listed in Forbes magazine, the richest people in the world got their money the old-fashioned way: inheritance and crime. They use their very large resources to stay out of the public eye, and control their wealth anonymously through shell corporations in tax havens around the globe. They probably pay Forbes researchers to keep them out of the magazine.
My evidence for this? Paranoia, logic, some reading about the Panama Papers and Pandora Papers, and observation of the amount of lying in media like Forbes magazine. If the financial media report something, odds are good that it is false.