I read Infinite Jest by David Foster Wallace back in 1995 or so and it poked fun at the demise of TV...and it turned out to be a prophetic comedy.
It was inevitable that tv's place would diminish.
It isn't "gone" and won't completely "go away".
With digital broadcasts, your viewing habits will be capable of being monitored (meaning targeted SPAM, er advertising, and even "live feedback" on gameshows, "top of the pops" video shows, political polls, etc.). Your TV will BECOME a computer.
People are watching tv on their phones now.
The same content is available through different sources.
The GOOD thing is that the "traditional" media schedule will become a thing of the past. No more "news block", junk/rerun block, and MAYBE the trend towards informercials (even on the major network affiliates after midnight) will end.
I read that book... it was excellent. Didn't care for his other stuff, but 'A Supposedly Fun Thing I'll Never Do Again' wasn't bad.
I don't watch TV either. If I had to choose, I'd pick the computer. Don't use a cellphone either; I have one for emergencies, but I don't use it.