It really just seems like a mental illness to have a billion dollars and still try to get more money. Like you should be on medications level of mental illness.
Why?
Because you're far past the point of ever being able to do anything with it, and you know that. You also have to be smart enough to know at that point that you further accumulating wealth is actively hurting the world. I can't see how it's any different than being addicted to drugs. Especially if you're so addicted you're actually willing to put that 8b on the line just to win even more.