As someone above said - culture. As to why the culture is different between say, NYC and Tokyo, well there’s many factors involved.
But as some people say when describing certain things in NYC, “it’s why we can’t have nice things”.
But as some people say when describing certain things in NYC, “it’s why we can’t have nice things”.
And the most obvious one is demographic composition.
I myself prefer the diversity of NYC over the monoculture of most East Asian cities (and I say this as an East Asian myself), but failing to recognize that both models have pros and cons because of political correctness is stupid.