The apartment scene on the linked page was about 40MB compressed, IIRC. True that was a static scene, and admittedly once you start doing 30 FPS (perhaps no need for 90+ FPS that the HMD's require, because head movement can be rendered independantly of animation), you're up to 70GB/minute. Lots, for sure, but not out of the question.
It's not out of the question, but it's back to distribution by physical media and the only unequivocal technical advantage is in the rendering of reflections and refractions.
