This assumption that you've smuggled in begs the entire question
There's a reason people living in small standardized modular pods in extremely dense skyscrapers is a staple of cyberpunk dystopias.
To go on a bit of a tangent, this is what bugs me so much about the housing conversation. People take fragments of thoughts and stitch them together into belief systems that are trivially incoherent. I'd be happy to live and let live if these people didn't also vote....
Most cities have a downtown core, and even some high-density housing in that downtown core, but so little of it that you can walk the whole thing in a few minutes.
Only higher wages make it possible to have taller apartments in some idealized frictionless capitalist system!
(In the real world, we can and should build taller not matter what, but certainly unionization doesn't hurt with this.)