Agreed. My point was that the reason you can finance such high-density construction in Tokyo (and New York) is exactly because so many people want to live there

Agreed. My point was that the reason you can finance such high-density construction in Tokyo (and New York) is exactly because so many people want to live there, which in turn is because of the network effects created by the people who do live there. It's a virtuous cycle, if you can get it.