I'm not sure that's appealing to me for a couple reasons that mostly boil down to "I don't really want a computer strapped to my face for hours at a time", but I'm the right kind of weirdo who sees the appeal in being able to eliminate the 32 inch monitor from my desk. I'd love to have all this desk space back to put "not computers" in. Or even just leave it empty.
Outside that, so much of this feels very ... I dunno. Answer in pursuit of question. Sure, I can play my Steam library "anywhere" (* caveats apply), but how often do I really want to do that, and especially how often do I want to take the very expensive gadget around to do that?
I've got a Lenovo x86 handheld purchased for around $500, which I'd already be a bit reluctant to drag out on the train or wherever public. For an even more expensive headset with optics and other difficult-to-clean parts, much more so.
VR games themselves are very "meh" to me. Some are insanely cool, but they just aren't enough to rationalize buying a headset. I've got a CV1 that's collected dust for years because it's just not worth it.
It looks like this does support a pretty robust sort of virtual desktop environment, though. That could make this almost compelling, I think. But that's a steep price for "it's almost interesting"...