I daresay a good part of the readership here would have trouble imaging that to watch non-live TV shows you had to be sitting in front of a TV at a particular time and if you missed it, that might be it.
Just one reason you mostly couldn't do heavily serialized TV. You could pull it off for a heavily promoted miniseries or limited run series. But, by and large, shows where missing an episode meant you were lost, just wouldn't fly in general.