Well on MS and PS side both weren't included with every consoles so developping for Move and Kinect was some sort of extra work and more cost for a chance that those who bought these peripherals would buy the games. It's important to think about development cost is it worth or not.
Because of that I believe devs came up with a control scheme that was first geared at the controller. Most games that used both Move and Kinect felt like they just tacked motion control where there wasn't needed and it always felt gimmicky.
I also think the reason they didn't really developped something compelling on Wii was because of the userbase. Since hardcore gamers were elsewhere devs didn't bother developping hardcore games for Wii.
I hope things change now though. There is a place for motion gaming but the games have to be developped around motion control and not around the controller. A bit like they did with Dance Central and Kinect Sports. I think indies, more than others, will try K2 to be different and because they are sure every X1 owner has a Kinect and now that it's far more accurate and tracks fingers more concepts can be tested. I'm still confident.
