I Love this Dearly. Makes me terribly romantically nostalgic.
Notice the "sign the petition in the lobby of the theater" part at the end. This was not a TV ad -- this was placed before a cinema flick. The move houses were worried that they'd lose even more patrons if full-length, uninterrupted movies were available on TV. Of course the home-video market made even more inroads against the movie houses.
The pay TV box looks like a little coffin. Man, can you imagine coin operated cable boxes like that thing? ;)