I'm not a polymarket gambler or a gambler at all really, so I have no skin in this game but why does it have to be fair?
I would say casinos and slot machines are already stealing from the poor and giving to the rich and already a scam, people play them (aside from addicts) because there is a chance they will win, they know not everyone wins.
I'm in favour of people being treated fairly I just think regulation isn't what is required here, more education "play this but the odds are tilted away from you".