I don't know nothing about it, but wouldn't it be easy to get a known provider sports book and just do the "front end" 

Betplay . Io
Betpanda . Io 

They use almost the same structure you'll have huge markets already with liquidity, i honestly think that the jump here is the social integration, all betting platforms try to build there own messaging system, Nostr could benefit being the backbone to all.

We got you, triible we need to integrate the social aspect