Fei-Hung on 08 February 2016
I think it will start of being the dominant one due to price of entry compared to the others, but will fall behind as the others become more affordable and start having more use than just gaming.
The downfall of PSVR will be it's inability to be plugged into a Pc to use with Facebook etc. That's where the money will be made as people start using VR for socialising and hook ups.
