I have watched the Twitch streaming of Roobet players, around 2.5k users were online at the time watching. Interesting at some point to watch, it gets dull after 20 minutes, from my experience.
Not for some people
. You know when you have that urge to gamble alot of money but you dont really have 'alot' of money then it will be amusing to see people gamble tons of money . Thats why there are alot of gambling streamer on twitch. Sometimes they win alot and rain it back to few people. Even if they dont win, it is still fun to watch people lose
Also the fact that those streamer uses roobet's site to stream means there are alot of interest on roobet's site, otherwise the streamer will just choose other gambling site to stream
P.S : Or roobet could be hiring them but I cant find any information regarding this so thats probably legit
That is basically twitch as a whole, you could also play any game you want (well financially might be difficult) or you could just simply play a free game on some bad computer, but you CAN play a game, even if you are having hard time putting money together you can go to an internet cafe and play any game you want for a short period.
But to be honest most of the people that subscribe and donate has at least a bit of money to have a computer, which means they rather watch someone else than play themselves. Now the point there is not to watch them play, the point there is to be with other viewers, have a chat (usually discord for offline periods as well) and just built this community that likes same sort of stuff, so each streamer is one community in itself as well. Its not just gambling or music or anything else, ALL of twitch is like that.