And of the billionaires I’ve met none would be willing to risk losing a comma no matter how big the potential payoff. In that respect Elon is definitely the 1% of the 1%.
Forbes (a website I despise) did a survey of people and how much they worried about money. As I recall even those with $3bn still worried about not having enough money. I'm not sure if that feeling is ingrained from evolving on the plains of Africa or if it's about losing status among your peers.