You're all excited about the power of the cloud, Kinect 2.0, and all the great stuff Microsoft says the Xbox One will deliver, so you snagged a preorder of the Xbox One Day One edition..
The onus of the issue seems to fall more on the retailers than it does Microsoft, since they're the ones that can't guarantee product availability. What this speaks to me is that preorder numbers are so high that the company can't make enough of them, which is great for Microsoft and for console gaming in general.