Both of you guys are incorrect. The company that developed pressure sensitive touch technology for PixelSense (Perceptive Pixel) and Kinect were both bought by Microsoft. PixelSense has seen very little change since the acquisition in 2007, other than spec bumps. As for Kinect, that underlying technology is the same since 2008. What they've done is improve the accuracy slightly.
This is like calling Google innovative because they bought a "smart" thermostat company.
Which is what people do call Google and Android.
It doesn't matter how MS/Apple/Google get the employees or release the tech, they will still get the credit when release to the masses.
Say what you want, MS added Kinnect to there gaming systems while everyone else didn't. Seems like innovation to me.