[red-iron-pine]

my understanding too was that his (ex)wife told him, basically, "what are young going to do with all of this?"

like he has literally everything he needs, and there is this massive number -- do something, anything with it. You have unlimited time, so chose to do something

[mothballed]

It's also not uncommon for extravagantly rich people to form family-run charity organizations to distract their nagging wife or family members with a pursuit where they can lord over employees / recipients / organizations without having any profit metrics by which they could be embarrassed by their inferior business chops. This is doubly applicable if you need to distract a nagging hag while you're off banging Russian bridge players.