> I must say the experience is pretty damn good. I can see people getting addicted to it an unhealthy way

I don't disagree, but I think interactive sex apps (with virtual partner or teledildonics) would be a much better experience that video playback (vr or not). Higher image quality, interactivity, and Im sure some sex-toy manufacturer(s) has a bluetooth/wifi API already for additional "immersion". There's a market for a much hornier Replika, if Apple would allow it. As for ethical & security implications of such an app, I'll leave as an exercise to the reader.