I find it said that nobody here has brought up streaming technology. There are several services currently in beta with On Live due out in June. I've used the technology. It works and it works good.
I don't know who he was addressing or what he is speaking of, but think about where technology is moving. Phones get more bandwidth every generation, fiber optic data lines to peoples houses. WiFi in a large portion of public and private areas. Streaming technology exists today and it will only become more viable in the future.
So when he said people can experience their gaming anywhere he means as long as the device you're using can handle the stream than you're good to go. Right now it's possible to stream the most powerful PC games to a very weak laptop or tablet computer (you can even plug that into your 50inch flat panel).