Because he doesn't want to. You don't get rich by giving away your money. 😉
I think you mean giving back other people's money...
Are we at the stage where he contradicting the accepted response to that age old question “is the Pope a catholic” after which he’ll move on to question the world’s foremost bear biologist on their beliefs regarding ursine toilet habits?
Just about every wealthy person is saying
Not in his mind. 😉