RE: By what standard did you find their compensation extravagant?
OK, relatively extravagant compared to performance.
If basketball player A is paid $15 Million per season and basketball player B is paid $8 Million per season and their stats and contribution to their team as well as their team’s performance are the same, I’d say player A is extravagantly paid.
Hedge funds have standard compensation: 2% administrative and 20% of profits. They don't get paid at all even when a year if profitable until they make up for past losses.
Those that make investors more wealthy are paid proportionally more.
I see no basis for your assertion.