@goatsarah MySpace Tom has the right idea.
His wealth isn't enough for a personal space program, but it's enough he's free from ever having to worry about money again as long as he doesn't waste it on crap like super yachts. Now he has multiple homes across the world and spends his time travelling and enjoying himself. That's a much more mature approach and I would wager he's far, far happier than Elon Musk will ever be.