I‘m baffled that you in all seriousness think that it‘s a good idea to live like that. It‘s less resource consumption, ok (for now at least). What about all the downsides to humans? Constant noise. Being exposed to people all the time. Pollution (by that I mean trash on the streets)? What about the pandemic? People had serious mental health issues during that time, that lived in places like you describe, because their appartements were tiny and they weren‘t allowed to go out.
I don‘t know man, to me you describe a real dystopian future. Just because it‘s a solution, doesn‘t mean it‘s the best/right solution.