Big screen size is being positioned as somehow opposed to the concept of 'openness' of web. It's one of a few jumbled concepts in here..
-No, big screens aren't going away, still as popular as ever. Other screens may also be popular as people watch things in a car, at lunch, etc, but big screens are still the go to in the home.
-Linear television content's days are numbered, which should be apparent to anyone paying attention since the days of the VCR's popularity. People want the content on their terms and time, and time shifting linear delivery is the workaround to use broadcast technologies. Advanced networks mean the need to broadcast is more and more limited. Business and legal wrangling of licensing terms will keep broadcast television around longer than it should be, but it will happen. Programming
-Game consoles are in no way threatened right now. They are massively popular streaming platforms, and Valve's streaming device isn't even on the radar for most folks. Sales of consoles are higher than ever.