The key there is that it is remembered in a positive way, not that people thing of it positively now. Pizza Hut used to be it's own thing, you would get deep dish personal pizza that came out on the cast iron pan they cooked it in. It wasn't the greatest thing ever, but it was good and different. Now, it's just shitty generic pizza and i don't know why anyone would go there, I don't think I've been there for at least 20 years now. It also used to be more like a restaurant, not a fast food joint.