By end of 2017 Rift will be much cheaper. We probably have a Rift 2 with roomscale and foveated rendering at that time. And they could even do what they did with Samsung (GearVR) and create an Xbox SKU of their headset.
I would love to see an upgrade path for people who bought the XBO. I don't know if that's even possible from a business standpoint and how you'd manage this, but I hope they offer something so the XBO won't end up the worst console I ever bought.
1. I said 400-500
2. DF is in the UK meaning they aren't using
3. Yes, you could get better hardware for ~400, i know it cause i did a testbuild back then. The 400-500 range is there cause i did 2 slightly different configs - one with dead meat (aka blu-ray drive) one without, used a cheap NT and for potentially adding Windows.