Yeah, I think that’s maybe why it didn’t spread as far. Back in my younger days, PBS in specific was much bigger because it was typically one of four or five channels. So when it ran Dr Who and Python, there was a greater chance of it being watched per household. By the time some of the other shows came to the US, cable was fully ensconced as the primary access to television. More channels, less chance of a given one being on at a time.