On the betting side with crypto, I think that chess is sport that does not match well with betting. Players that are good consistently get good results and it makes it difficult to make it interesting. On top of that you have very advanced algos that would beat nearly 90% of players.
99% of players will be beaten by bookmakers in any sport and it's not just about the algorithms. By the way, now there are a lot of chess tournaments and a very small number of them in classical chess (which are really boring and unrealistic to watch online). In games with a short time control, the variability of the results is much greater than in the classic control, so the results of the tournaments are more random and quite interesting to watch and place bets on.