That unused space doesn’t have sufficient infrastructure to support a large population. The ones like that which were recently built up had massive investments in their electricity, water, and sewer infrastructure.
We can’t just build apartments on the empty land inside NYC. Most of it’s empty for a reason.
And, even though it’s empty, it’s still worth billions.
As for vacant apartments, there aren’t normal vacant apartments. LIC is tapped out. They’re building more as fast as they can. The truly empty ones are mostly individual garbage-tier possibly dangerous walk-ups scattered throughout the city, and multi-million-dollar investment condos that will never have anyone live in them.
We’d be better off buying land upstate, making a housing development, and putting a Metro North station in the middle of it.
To be fair, I’d love to ban those investment condos.