It's not physically possible for him to spend the amount of money he could produce, on things that he could personally use.

The most expensive house sold in the US cost $0bn (to the nearest billion).

The most expensive private island that I can find any reference to online, Larry Ellison's island in Hawaii, cost $0bn (likewise).

The most expensive painting ever sold at auction, Leonardo da Vinci's Salvator Mundi, went for $0bn.

The ten most expensive historical artifacts ever sold at auction, combined, comes to $0bn.

The most expensive superyacht ever just about rounds up to $1bn, and the whole point of a superyacht is to be insanely expensive.

Anyone who thinks billionaires should be incentivized with more money isn't paying attention.