Consider the telephone.
When I was a kid (late 60s-early 70s) you had one or maybe two phones in your house. You didn’t own it, Ma Bell did. You rented it from her. It had a slinky-like cord, a rotary dial, and when a call came in a real bell rang. You could not unplug it from the wall without a screwdriver, and moving it from one room to another required a visit from a Bell technician, and a charge.
NOBODY* had a touch tone phone, an answering machine, call waiting, a pager, or a cordless phone. Doctors had answering services, but they consisted of real people who took messages. The only people who had car phones were villains in James Bond movies. Cell phones, as we know them, were for Star Trek and Dick Tracy.
*(I know some of these things existed back then, but they really weren’t in widespread use. The first answering machine I ever saw was on the beginning of the Rockford Files).