I don't think Kinect or Move system bundles will swell numbers of either console, but they will provide gimmicky options for the HD systems. They'll likely entertain most folks for about as long as the Wii does, which tends to be that two-to-six-month period.

That's part of the beauty of the Wii's price point. I bought one in 2007 and haven't used it a lot, but that's okay. It was a homebrew/emulation machine for a while. Now, it's mostly for WiiWare or retro remakes. My "real" Wii game completion average is pretty sad, somewhere around 20%. They just don't hold my attention like PC titles. (probably because most of my standbys are multi-player co-ops like L4D2, etc, or sandbox like Fallout 3)