Inherited money often comes with strings attached, too, limiting what the heir can or can’t do with it. And of course they often develop habits that need money before they’ve actually inherited any, so it’s not surprising when they beat their own path to wealth anyway - usually helped along by their birth connections and by the fact that people know they’ll eventually inherit significant wealth.

Also, we seem to always make this assumption that there’s some amount of money that satisfies the craving for money, when there are plenty of signs that the super-wealthy almost always want more money regardless of how much they already have.