I grew up in the 70s and 80s and don't remember TV being rationed. On school days there wasn't much time for TV but I certainly remember watching an hour or so after school and also watching a few hours of children's TV on Saturday and Sunday morning and then an hour in the evening (after a day of being out or playing).
I like to think that I turned out fine.
And it makes me wonder whether I need to be so strict about TV for my own DD. She hardly watches much during the day as she's so busy with activities and playing or out and about but I wonder why I stress so much if my DD watches an hour in the morning and an hour in the night!