I dont think broadcast television will go away....I think it will get better. With the digital signals, they can pack 5 channels where one now exists.
What is to prevent the NFL, or Nascar, in the future from including DTV rights in their future negotiations. Lets say NBC wants to get back in to the NFL, and bid on a package to show 2 NFL games at the same time. (NBC.1 and NBC.2) with them getting a certain number of commercial time to sell within the broadcast.
Cable is getting too expensive...our area just went to $70.00 for analog, extended basic service.
MBC has sunday nites games. Thye are back in it.