This isn't a big issue. Streamers will always have their plans and platforms ready. Probably we can see some of the firms to come up with a dedicated streaming application for gamblers. For now we've got more platforms that support streaming and they might have their own terms and conditions.
That's true that's why I said that they will find another platform sooner or later. Twitch is scheduled to ban gambling so right now I think they still let people stream gambling. I am not sure if twitch will just announce that they ban gambling especially streame from the sites they mentioned in their twitter but I think not all gambling will be banned but I did read that they will identify other to ban as well but they did announced to continue with sports betting, fantasy sports and poker so that means not all may be banned.