Huh?? How will it split the userbase?? It's not like the next Uncharted or w/e will come out and only work with VR. I'm suspecting games will work with VR support as opposed to outright VR only and even then those games would be most likely labelled and advertised as a VR game so there should be no confusion. Also PS4 can have support for VR for things other than games. There are movie and sport apps on the PS4 that can easily support VR if they want to.
It's going to fail on PS4 breh, let it go, I know you ride for Sony but when has a peripheral ever worked out? Let alone one that's probably going to cost as much as the system itself.
The game has to be designed with VR in mind, you can't just take UC4 and hope it works on VR. The games need to run at 90fps, it's not about just enabling them to work with VR, you need the horsepower to push the game to 90fps or else you run into issues with motion sickness. All of the games showcased for the PSVR were far less graphics heavy and were designed with the headset in mind.