Lets see if it does before we start saying that....it might be successfull in the casual market which is bigger than the hardcore market

I don't see how people see Kinect as selling hardcore gamers out. Hardcore gamers on 360 have games to play and new ones coming out, Kinect is just Microsoft way of reaching out to CASUAL gamers, a DIFFERENT audience, thereby increasing the number of people who would want to buy there product. Kinect coming out will not suddenly make the xbox a casual gamer only console. Principally Kinetic is the same as the dancing stage games, lips or guitar hero, they all have they're own special peripherals, but they aren't needed to work a 360. They like Kinect are simply additions to the console.

Kinect will NOT work on core games. Majority of gamers on the 360 are core gamers.

While PS Move will work on both casual and core games. There's more core gamers on PS3, but there's a pretty big casual receptive audience too.

Wii Motion Plus works on both casual and core games too, but the core audience is too small.

Purely camera based games are too limited as you've seen from the Eyetoy. You NEED buttons for core games.

If you look at the core games that are trying to implement Kinect, the gameplay has to be downgraded in order to work well.

Look at Forza, you can't accelerate or brake. You can only turn.

Look at Harry Potter, you can't even control the characters other than swing your hands to do magic attacks.

Look at Burnout. You can't lightly accelerate, or brake real hard. Its all or nothing.

It ain’t great.