AI usage is reduced to nearly zero, it's now mostly a niche tool used only in specialized fields probably for research. No LLM girlfriend apps or book authors. No more visual slop. People may still use it occasionally but won't take everything at face value.
Cars would be smaller. More buttons less screens. You truly own what you purchase, and that also goes for any electronics and software. Software with subscription models practically disappear. Fast food chains either increase their food quality or disappear too. They would still shrink no matter what.
Rent would become heavily regulated, and reduced. You would see an increase in work from home too, and more flexibility with people's schedules.
I don't know about the "bad morals and habits". Been thinking but can't come around many. I guess you would see a lot less sports, but I'm not sure if that's good or bad. Maybe people become more isolated and shut in? But also if they're now sharing more interests maybe that's not the case.
It's very hard to explain. I'm not American but I've migrated to Australia. What you will find is a culture that is probably much more polite and considerate of others than American culture, and also, the culture here doesn't appreciate individuality much. I'm painting this with broad generalizations so of course this will differ from person to person, but generally, this is my assessment.
Individuality isn't overtly shunned, people will tell you to be you, but subconsciously you will find the real attitude is that people who stand out are also set apart, semi ostracized. It takes loads of charisma to stand out in a positive light here. This is the land of the tall poppy syndrome. Difficult to put in words, I would bet money you won't notice upon your arrival, you'd be like "nah man that mothra dude on lemmy was talking shit, people here are super friendly" and then after a year or two you'll see the pattern. It's very subtle but very much there.