This is mostly hearsay from my grandfather who died in 1993, but was around in the 40s and was always trying ways to get new television signals:
In West Virginia, reception is spotty because of the hills and valleys. There were only two local channels (5-CBS, and 12-NBC) that one could get from rabbit ears. I remember as a kid putting aluminum foil and touching the foil to something metal to get better (or sometimes worse) reception.
But, hey look, there is a big hill overlooking our small town. We can put a big ass antenna up there, send it down the hill, split it around to our neighbors, boost the hell out of it, and get channels from Pittsburgh, Wheeling, Stuebenville, OH, Charleston, etc.
The first “cable” television system was basically a business model whereby if you wanted my grandfather to run a line from his antenna to your house, you agreed as a neighbor to chip in part of the cost.
I remember mornings where we woke up and there was nothing on TV. The old lady up the road called shortly thereafter. Granddad and I would take his 13" b&w portable tv and other equipment up the hill to test the signal. Good signal at the antenna! No signal at the bottom of the hill.
We go to the halfway point and get a good signal! We spend several hours rinsing and repeating until we see that a deer got tangled in the cable at a certain point and we repair it. Then that evening, we enjoy our eight channels of entertainment! (Three carrying the same broadcast).
I remember being able to watch the Pirates on KDKA channel 2 out of Pittsburgh. Nobody except our “cable” subscribers could see that in this area.
As I sit in the very same house where that system was installed, I wonder what Granddad would think of 700 channels, YouTube, Netflix, etc. at the touch of a keystroke. My guess is that he would probably try to figure out a way for more bandwidth.