This is a really cool link. There is something I don't understand in the example though. The first scenario assumes that when you play a richer opponent and win, you get 20% of your total money before that flip (less than you started with, 960). But then later when playing as a person who won the first flip, if you play against someone who lost the first flip and lose, you would lose 20% of your money and the winner gains 20% of YOUR money, not 20% of their money, leading to them having 1040 and you having 960. So something is screwy here unless I missed something.

Agree with the premise overall. Maybe the example needs workshopping though? I can't quite tell what happens when people with highly disparate amounts of money play each other as far as who gets what I'm the outcome.