The potential value of PSVR over PC-related VR headsets is what some people consider for Console over PC. The plug-in and play functionality for PS4 and PSVR is going to be a considerable factor, because every PS4 is capable of VR whereas with PC it's all about driver issues, potential workaround fixes, determining whether or not your PC hardware can run it etc. With PS4, it's reasonable to expect every single game to just work.
The focus on social aspect I think is going to be an interest factor for PSVR to succeed. There are popular "People react..." videos and including VR and Horror Games are really popular, I watched a couple that were multiple millions in their view count, using Oculus Rift and a Haunted Manor or something. Sony having live-streaming built-in with VR simultaneously will help the 'word-of-mouth' marketing VR will partially rely on. It also helps the Processing Unit mirrors the gameplay to your TV so you can play with friends and they won't stare at a blank screen. Again, the convenience of plug and play alone means it's a convenient and simple, hassle-free option for consumers.
Exclusive titles are always a differentiating factor between platforms, but with Virtual Reality, having some unique experiences from the beginning will be crucial for some for setting the benchmark for their long-term appreciation for VR and if Sony can deliver a strong launch lineup of VR games, it sets a path for the larger gaming audience to associate PS4/PSVR with a quality VR experience that can't be found on PC. Coupled with the convenience factor will play an important role for the less hardcore audience in wanting to get it for themselves, knowing they just buy a specific SKU and they are instantly ready.
That's my take on it that's all.