That's a very good question and one I may struggle to answer properly. I think with the other technologies there was always a feeling of using technology for t

That's a very good question and one I may struggle to answer properly. I think with the other technologies there was always a feeling of using technology for the sake of technology. My experience with VR was that once somebody put the headset and noise cancelling headphones on, they were immersed. That is, they couldn't talk to a friend, fiddle with their phone or anything else that would distract them. Seeing people move their head for the first time and look shocked/awed that there was a feeling of presence is like nothing I saw with the other technologies listed. People would say "oh that's neat" or "that's cool". With VR, some people take the headset off and just sit there in a kind of daze at what they've just experienced. Seeing people try and reach out and touch stuff is always funny as well. Funnily enough, the three technologies you list I see being used in conjunction with VR in some form or another as it grows - Valve's lighthouse tech is broadly similar to Kinect, the new Oculus/Steam controllers are somewhat in-line with Wiimote technology. It's starting to feel like all of the pieces of the puzzle are beginning to align for the very first time. The real challenge to make the technology shine is going to be content creators adapting their thought processes to a new medium. They won't be able to apply the tricks that grew up out of cinema. The toolbox needs rebuilding. I'm eagerly awaiting trying what Oculus have been doing in this area with their Story Studio.