That's not unique to television, for movie theatres are struggling too. I can remember sitting down in the late 1990s to watch the Godfather in an aging and elaborately decorated cinema, something that probably doesn't occur anymore. It was more akin to a theatre for plays than a movie house.
Having been to a half dozen repertory theaters in various parts of the United States in the past five years (Upstate New York; Vermont; Washington, DC.; Los Angeles; Olympia, Washington; Missoula, Montana) I can assure you that this still happens, and not just in major metropolitan areas (although if you live in one, like Los Angeles or New York, your options for seeing classic films in a theatre are great).