5M possible, maybe even 6M, but for more Sony should make a far bigger marketing effort and get more 1st and 3rd party VR games, and as the market showed that even growing VR is still niche this gen, it's most likely that Sony will allocate such larger resources for next gen. The good news is that once there is the right HW, the biggest effort is only finding a good input paradigm for free roaming (VR on rails makes little sense except for a few very simple games), while with enough GPU power the graphics part can be dealt with almost automatically, it's just matter of calculating each two frames from two different points of view (corresponding to the eyes) of the same scene, so it even takes less than twice as much computing power as with single frame 3D projection, as the initial steps for each doble framecan be shared, and the HW must anyway manage a single world viewed from two points of view, not two worlds, this means that VR requires a very reasonable increase of computing power and almost no increase in dev resources and time for graphics. Once HW and input matters are solved and HW is affordable, VR becomes viable and the only step remaining is making more people like it.







