Streaming games have far too much latency for VR applications. Latency requirements for VR are much lower than console games because too much latency on head tracking can cause nausea and breaks the "immersion" effect.

But yeah, I agree that when VR blows up big, it'll be something like this rather than the PC-based Oculus. That solution has always felt clunky and more like a development kit than a consumer product.