I always get a chuckle about posts like this.
In fact LIV has a purse structure for every event which pays out more the higher up you finish on the leaderboard.
LIV has in fact the same system as most other professional sports league i.e. you get paid for signing up to play in the league and get additional money the better you do relative to the others competing in said league.
The amount you get paid up front varies and has to do with how much the owners feel you are worth to them. Opinions vary as to the amounts involved.
It's kind of like a base salary plus bonuses for performance in a lot of employment scenarios.