I didn’t move the goal post, most of the channels you got access to when subscribing to cable were the same channels you had access to without cable and they had ads, a minority of channels, starting in 72 with HBO, which was the first cable exclusive channel, didn’t have them but in 77 the trend reversed.
That’s 5 years without ads on a minority of channels you could watch and people speak like all cable was ad free and like that was the whole point of it. Well, no, the whole point was to get TV to people who didn’t have good reception and the people here ignore the 24 years of cable TV that came before 1972 and the 46 years since 1977.