When I was a boy there were tall television broadcasting towers all over the province. Every TV had a pair of rabbit ears sitting on top to pick the television signal out of the air. It was not uncommon to jump up, go to the television and turn the rabbit ears to improve the reception, lessen the "snow." Often it was not possible to get completely rid of the snow, especially if the channel was a distant one.
I've noticed these towers are disappearing. One of the towers in town, there were two, had its top chopped and its height reduced. The other tower is still standing on the edge of town but its presence is under pressure.
When I started thinking about this, I googled the topic and discovered a piece posing the question: Will Television Disappear in the Years to Come? According to the linked article many rural Americans have seen most or all their over-the-air stations disappear."
Television, paid for by advertising, pulled for free from the air has been minimalized by the advent of cable. I can see the day the towers, left with no use, will be removed. The sight of these towers will be relegated to memory along with other sights once so common. Need an example? Think of the smoke on the horizon left by a passing coal burning steam engine.