They thought that TV would kill off the movies and radio, but they are both still with us.
The internet though, might actually be able to do it, look at all the stuff included in a phone nowadays.
We get closer to a single device for all of our communications, TV, Radio,movies, internet, phone,even online newspapers and magazines, all in one device.
All that remains is to shrink discs so they can be run on a Kindle, or Nook size unit and we will only need Desktops for industrial/business applications.