Virtual reality is the talk of the town at the 2014 Game Developers Conference, with Sony's Project Morpheus and a new Oculus Rift driving the conversation. But just because Microsoft didn't bring its own virtual reality headgear to GDC 2014 doesn't mean the company isn't interested. We cornered Microsoft Game Studios boss Phil Spencer before his panel today, and he tells us he actually believes VR could be commercially viable for gaming.