the 6 PLO doesn't get going much .... the players that are losing would be gambling a lot trying to get unstuck
^^ Sounds like two great reasons to stay in the game!
Of course, if this sort of thing is important to you:
if you lose money in the game you're unlikely to get it back anytime soon ... the chances of doing some of your winnings is high
... then by all means quit and lock up a win.
But great games don't happen that often and you maximise your long-term profits by playing in them for as long as you can when you do find one running.