When he was a little boy, Sam Vimes had thought that the very rich ate off gold plates and lived in marble houses.

He’d learned something new: the very very rich could afford to be poor. Sybil Ramkin lived in the kind of poverty that was only available to the very rich, a poverty approached from the other side. Women who were merely well-off saved up and bought dresses made of silk edged with lace and pearls, but Lady Ramkin was so rich she could afford to stomp around the place in rubber boots and a tweed skirt that had belonged to her mother. She was so rich she could afford to live on biscuits and cheese sandwiches. She was so rich she lived in three rooms in a thirty-four-roomed mansion; the rest of them were full of very expensive and very old furniture, covered in dust sheets.

From Men At Arms by Terry Pratchett

Depending on how strict you are on dates, the first one that jumps to mind is “Dallas”. It ran from '78-'91, so in my mind, it is a show that very much was 80s.

Honorable mention to “Doogie Howser, M.D.”; '89-93.

I’m thinking Elon doing this crazy rename is a throwback

https://en.m.wikipedia.org/wiki/X.com