don't forget the breakable, shit-tier gadgets that will get thrown in on the sidelines by other companies. Shame, Mad Catz might've scored in this production.
It's not common, but like 4k displays, I don't think it's quite a "fad." The main problem is simply that VR is in it's infancy and there aren't many good games that support it and the hardware requirements are... tricky. That said, more and more companies are trying to support VR, including Intel, Sony, Google and now LG. Eventually, it'll push through into the mainstream.