I haven't taken the step yet to try out polymarket and from what I understand you can't invest in a token of the platform and there also aren't any fees?
When it comes down to prediction markets it kind of feels like the US Elections is the only real thing they are used for and unless they drastically change their interface I doubt many sports bettors will adopt it. Still very impressive volume numbers though! If you are looking for an exchange to place crypto bets, I would say test out sx.bet, their fees are turned off so if you offer bets you potentially can get great odds.
Good tip. Will check out sx.bet though from first glance it does look light on liquidity.
I'm not 100% on the business model for polymarket. They use UMA so in some ways you might consider UMA to be a governance token of some kind when it comes to resolving events.
From what I understand, sx themselves is acting as a market maker to bring some initial liquidity but still with odds that have quite some juice on them. With feels turned off right now, sx is pretty much betfair with no commission but at the same time with a limited number of users. It's the classic catch22 for everything that tries to be a betting exchange. liquidity is needed to bring users but users are needed to bring liquidity.
I never even heard of UMA, good info to know they are using that.