It runs on an Atom chip, the new Cherry Trail. This is a known fact about HoloLens (one of the very few).
Both are different situations. Glass was a phone accessory and X-Box One had competition. HoloLens is the first of a new class of device and it is a stand-alone product, so none of those lessons apply here.
It IS the headset, there is no console.
All irrelevant. We already know what CPU it will use (see above).
It's not for anything, it is a stand-alone device running Windows 10.
OK, my take is this - it is not just a new product, it is a whole new platform. When did anyone offer a whole new platform on the cheap? Product price is never simply a reflection of the cost of making it, it is based on what the manufacturer believes they can get away with charging. That means it is going to come down to what Microsoft want to achieve with it. From the demos we know for sure that they see it as a consumer device, not just something for business or government, but I don't think they'll want to hit the market too hard with the first gen device, much as Apple only sold the first iPhone in the US and didn't get carried away until they were sure they had a solid platform.
Put these things together and I think a lot of people who want HoloLens to be cheap are going to be seriously disappointed. I'm expecting it to be somewhere in the range of $1000-$2000 but even if it's $5000 I will still be first in line for one. I am usually not an early adopter but this thing seems like the future to me and I want in on it from the get-go.