Curieux everything is about money, no one is doing this stuff for free. SLR is a means to an end for these studios, a way to get eyes on their content and make some money off it in order to stay afloat. SLR aren’t providing a free service either though and undoubtedly take their cut, as they should.
At some point a studio will have a decision to make on whether they can make more money in the long run by cutting out the middle man (SLR) and selling their content direct to the consumer exclusively via their own site.
Like a few others have mentioned though, RL haven’t been releasing a lot of videos at all of late and their best ones, in my opinion, are from a long time ago. I wouldn’t think they were in a prime position to break out on their own right now. It’s a strange one.