Tail beginning to wag the dog?

Microsoft's Bill Gates and Steve Ballmer recently previewed Windows 7, which features a touch user interface. While watching the video embedded in the post, it was the first time I looked at a computer as a big mobile phone instead of the other way around. I'm sure it's because of iPhone and the touch interface. But I found it interesting that these two things converged in my mind. Maybe we are seeing the beginning of a reversal of the computer driving mobile device design?