[mklim]

VR headsets aren't platforms in their own right with their own operating systems like consoles are, they're hardware peripherals. It would be like a company refusing to launch their game unless it detected the "right" controller plugged in to the computer. All of the game's code is being executed by the PC itself--that's why a shim like this was almost instantly thrown up to allow Oculus Store games to be played on the Vive, all they needed to do was translate the I/O from the Vive to the protocol that the game was expecting from a Rift. It's along the same lines as x360ce, a wrapper that lets you use any gamepad you want with games that only have official support for Xbox Controllers.

There are real differences in the Rift/Vive systems right now in terms of what they're capable of (Vive has touch controllers, Rift won't get them until a few months down the road), but hardcoding a check into your DRM that makes sure that you're using the correctly branded headset is just asinine. There's no real differences between the headsets themselves that justify it, it's just artificially trying to cut out competition.