From what I've heard and seen of this man: He hires people who are fantastically smart -- literally best I've ever met in many cases. He pays them astronomically -- not just in finance, but also in his medical research thing, and he is committed to giving them the resources necessary to succeed. He thinks somewhat unconventionally -- that academia and business are too slow, and that a small number of super-talented people can be very very successful.

He's not known for blowing money ostentatiously -- never heard of his yacht/plane/private island/museum wing. Presumably he wants his kids to get the best education possible and to meet the most interesting people that they can, but I'm sure that he has absolutely no desire to give them enough money so that they can turn into the kind of billionaire brats that he detests.