This is presumably what might inspire a billionaire to sue Forbes over their position in Forbes published rich list - https://www.reuters.com/article/us-britain-saudi-billionaire...
Money is entirely ego-points for people like that.
I think their sense of identity is tied to their performance. I noticed the same thing in sports or even in school were students compare exam scores.
I had to google that. Shocking story.
> To them, it is like a game.
I think you're right. I also think Trump (ahem) once said something along these lines: "At some point, all this stops being money and is just numbers that you want to keep going up." That would support your competitiveness assertion. (It might also explain why men tend to make more than women, but I digress.)
> I think its the same mechanism that will drive someone to grind for many hours in an MMO or suchlike.
nah, that's just the variable-ratio reinforcement schedule :) https://www.verywellmind.com/what-is-a-variable-ratio-schedu...
I've ruminated on this.
I think the only reason that could explain such excess is competitiveness. To them, it is like a game. Its not about getting another yacht, its about beating the other guy. I think its the same mechanism that will drive someone to grind for many hours in an MMO or suchlike.