Metal Gear Solid creator Hideo Kojima has already confirmed that the Steam version of both Ground Zeroes and Phantom Pain will be headed to the Pc platform at his live Twitch stream. Apart from that, PC users have the advantage of using a Steam Cardboard Box in the game, and this particular cardboard box will carry with it a bunch of specific functions that have yet to be revealed.
Ah, the popular cardboard box, which seemingly baffles enemies throughout the Metal Gear Solid franchise. I guess the baddies are simply too used to a random cardboard box lying around here and there, never mind the fact that the box itself seems to have a mind of its own, changing its physical location from time to time. Perhaps they have been too brainwashed to look out for actual threats than a recyclable cardboard?