> The entire population of the world could live in Texas with an American quality of life
Yeah. Everyone would have sub 90 sq meters of space for everything, and there would be zero space for any sort of forest, park, a shopping mall or any roads for all those 8 billion cars. People would have to have drone deliveries for everything because roads would be gridlocked with all those cars and you won't get anywhere anyway. And better wear PPE mask outside at all times. Is that American lifestyle?
> Crops can't grow
If you spread 100 families on surface and give everyone 90 sq meters, that's all gone area for crops. Add infrastructure, electricity, piping, roads and junctions to handle private traffic. Add maintenance. But if you stack em vertically in the space of a medium sized parking lot the remaining space is all crops or trees or whatever.
> Did they keep chickens and goats in their apartment?
Sounds like animal cruelty to me
> Did they plant forests in their balcony?
No but a forest is available within walking distance. In your ideal world really no one leaves their designated box for a healthy daily walk? Ah right, I forgot about 6 lanes of traffic to cross.