The existing prediction markets have been regulated out of existence thanks to Kalshi.

See PredictIt, Polymarket, YC is doing a great job of fulfilling Thiel's vision of building monopolies. https://astralcodexten.substack.com/p/the-passage-of-polymar...

https://www.usbets.com/did-kalshi-kill-predictit/

https://threadreaderapp.com/thread/1478370047735341056.html