"This guy": https://en.wikipedia.org/wiki/Masayoshi_Son

> If it's based on

Not really. Son himself got most of his money from investments into Alibaba.

What you are probably referring to is that the Saudis are large investors of the vision fund. I don't share your optimism that there won't be insanely rich people with little accountability in the centuries to come.

Well if he doesn't get too fussy about investing revenues specifically from fossil fuels and diversifies into simply investing money seized by autocrats regardless of its source then it is a plan that can be sustained for millenia.

NPR Planet Money podcast recently did an episode all about it:

https://www.npr.org/2019/10/04/767379358/episode-943-unicorn...

He's a Japanese investor. While a significant amount of the funds he invests originated from oil money, his actual investments are in technology companies, so the future revenues and valuations of his investments are not based on oil.