Yes, betting on chess is fun. I just don't know why still no platforms adopts it, as no one above 1600+ rating would even dare cheat on chess games. It's a matter of their integrity as well.
This is just basing up with my own view on why theres no platforms adopt it.
1. Less demand/interest
2. Boring to look at (Less physical movement etc)
3. Time consuming
So its not surprising that platforms would simply just ignore this one.