Which is fair enough. I suspect the majority of the buying public don't care that the XBox One has Kinect 2.0 as standard. They'll buy the console for the games they want to play, simple as that. Sure there might be a minority that won't buy it because of Kinect 2.0 or some other feature that person doesn't like.
Companies try to please the majority of people though what can happen from time to time is a vocal minority drown out the largely silent and happy enough majority.
That may be but believe me that extra $100.00 will factor in at some point for more people than not.