Kinect will end up just like the EyeToy which is a 7 year old piece of technology that nobody cares about. Move is just PS3 games being able to be controlled by waggling a stick, to be honest, I'd rather have none of them. I'm very sure that Kinect will be a money pit for Microsoft who are clearly trying to get in on some of that family oriented gaming that Nintendo have monopolized, nothing wrong with that of course, as Sony are doing it too.
I just see housewives sticking to their Wii's and the 360 crowd sticking to Gears, Halo, Mass Effect etc, I don't really see who is going to *really* use either Move or Kinect for any length of time. As soon as the novelty has rubbed off everyone will go back to using the convenient and practical method of controlling the games with a control pad. Also, both of these systems are going to be quite pricey for what is essentially a pair of gimmicks hoping to take a slice of the Nintendo pie.