I understand, but that doesn't change my assertion that comparing Tokyo density to only-NYC density makes no sense, especially as an argument that there is no room for to build more. Hogwash! Half your NYC map is pure green, but even leaving that, most of the land area on that map that is housing is SFH.
There's plenty of room to grow up. Just because the reason we don't is shitty government organization and FPTP voting doesn't mean we can just ignore the vast swaths of low-density just outside Manhattan 's borders.
The density of the NYC MSA is 1/3 that of Tokyo: https://en.m.wikipedia.org/wiki/New_York_metropolitan_area
There's plenty of room to grow up. Just because the reason we don't is shitty government organization and FPTP voting doesn't mean we can just ignore the vast swaths of low-density just outside Manhattan 's borders.