I guess I have to check it myself if all games are available. Similar to other sportsbook like duelbits and stake, they also have live streaming but not all the games are available for live streaming. This is probably the trend now, great addition for bet.io to stay in the competition.
I am probably going to test if there is any functional live broadcast for UFC event this weekend, but I would like to get some answer from Nikita or other representative from Bets before that.BET365 also has this live streams but you cant increase the size of the videos without some tweaking.
I have no account on this site since it's restricted in our country, but I tried with stake, they have a live stream but just ilke this, the scream is very small. Not sure what kind of tweak is needed, but I don't want to make it complicated on my end if it's hard to operate. 
As for NBA games, I have no problem since there are lots of facebook streamers in our country, and I also have followed a streaming site on this particular league, and it's free of charge.