My only thought is it could be something to do with Monaco all in room, but given I’ve never played in there I’m not sure how it even works.
you are correct. Monaco is how it's done.
It's an all in room and the bet is for the total amount of whomever has the lesser coin value.
So if a couple players meet in monaco and they both have over a billion coins you get a huge win one way or the other.
the leader in coins probably has over 40-50 billion by now. He's got such a big stack that he's never going to lose enough times to go broke.
But also there are probably at least 100 people with over a billion coins by now.
anyway my advice. stay out of monaco. everyone loses eventually.