It might be a necessary move. The odds of many game developers retrofitting existing titles for VR is pretty slim, and there will be certain games that just don't make sense in an immersive form. This gives you a way to switch Steam games without having to repeatedly remove your VR gear -- you can keep it on for as long as you're playing games (and if other developers have their way, beyond that). Moreover, this gives you a reason to buy that pricey headset beyond the handful of VR games available at launch. It might just help you concentrate on your game by shutting out more distractions.