Sony had a very understandable reason for pushing Blu-Ray with the PS3: Blu-Ray is their child and success of Blu-Ray probably means financial success for Sony as well. This does not apply to Kinect, because Kinect is not a Microsoft invention, they are only licensing it from PrimeSense like other companies do, so from an economical point of view there is only lttle reason for them to push the technology.
And I consider a general huge success for that technology as rather improbable. There are a number of big differences between Kinect technology and technologies that got very successful in everyday devices (like digital camera sensors, touch screen, motion sensors etc.)
- Kinect technology is way too expensive for everyday devices, and prices are not going to drop to reasonable numbers any time soon
- Kinect technology requires lots of processing power
- Kinect technology consumes too much energy for portable devices
- as an input device, it is rather prone to misinterpreting the user.
Microsoft already said that they plan to support the technology in Windows as well, especially for media center control. But as an input device, it will probably end up even less successful than speech recognition, and for similar reasons. And speech recognition is very cheap technology, the algorithms have been researched and improved for decades, and still it never got very popular in operating systems.
I expect even 3D webcams (=simple webcams with two instead of one digital camera sensor) to become more important. They can technically do almost anything that Kinect can do, unlike Kinect they are also perfect for the upcoming success of 3D video/displays, and they come at just a tiny fraction of the price of Kinect technology.