I find that sumo is very entertaining and also part of important culture, the result of the match sometimes cant be predictable, its really suitable for betting, but the one that interested is really little so I dont think its going to be popular if its put into gambling site
Its a good Japanese culture and I always see that as an entertaining watching the previous match of youtube but I hope we dont bully them because I feel bad for them for beeing like that, i mean they are working hard for that. Since its only happening in Japan i also think that it will be hard to have betting site on that.
I don't see how it would be hard, bet before match and Livestream via a camera the match to see the result. Are cameras forbidden or looked down in sumo?