@Alyssa the problem is that preexisting real-money prediction-market platforms have their own troubles. To the best of my knowledge, there are 2: Kalshi and Polymarket.
Kalshi is great but has run into regulatory issues with the CTFC, IIRC. Polymarket uses crypto. The intersection of "people who care enough about science to forecast about it" and "people who use crypto" is small. I'm trying to target a bigger market of "people who care enough about science to forecast about it". In an ideal world, I would persuade Betfair - the world's largest online betting exchange - to start taking bets on paper replication, because that seems much easier than creating a new prediction-market platform.
My hunch is that some of the troubles faced by prediction-market platforms arise from them focusing on US customers, and that expanding to Canadian, UK, EU, Chinese markets would help.