I understand that lifetime subs can be good for a number of reasons in the case of SLR. It's a way to heavily boost your investment and increase user data in an evolving market. Like it would make no sense for non VR porn studios such as the vixen group to offer lifetime subs right now (unless it'd be very expensive). Hopefully SLR will stop giving the lifetime option in the future when the VR porn market is more mature.
Depending on your contract or whatever settlements there are between third party studios and SLR you obviously get affected by these lifetime subs, if they aren't transparent towards you guys and you are unhappy about your revenue then I guess you can either try to stand on your own, choose competing aggregators, start mitigating the problem on SLR (such as cropping up videos, extended releases and such), or like you do now, discuss it openly and maybe we the customers also get our voice heard.
For me as a user I get no added value when LethalHardcoreVR add a second version of their 2 months old scene (be it a 5 min extended version or other cuts, I don't care), I also get no added value when RealHotVR remove their scenes just to rerelease them a month later as "higher resolution" (well we know SLR's own opinion is about remastered videos). Deepinsex's constant double releases, perVRt's 5 scenes of one shooting... At the same time I have no problem with these studios doing this, UNLESS it negatively affects stuff that gives me value on the site, studios that try to push the tech forward and that try to vary their scenes, for example KinkyGirlsBerlin.
I hope that SLR can address this and find a way to benefit the customers and satisfy the studios at the same time.