By the way, NYC isn't even close to being fully built up. Yes, they will need to improve upon existing and build new infrastructure but can easily double in size over the next 20 years. I would like to see over 1,000 buildings over 2,000 feet tall in Manhattan. Hope I live long enough to see it.
The boroughs are also getting built up. Skylines are developing quickly in Brooklyn and Long Island City (Queens).
I think this would be a great place for Apple to build an East Coast HQ. Something spectacular. Maybe they can buy the MetLife (formerly Pan Am) building, pull that eyesore down and put something in its place.
Not likely to happen. Apple corporate has a mindset of building a campus in an open setting among trees and parks, not among skyscrapers. I remember when the SF peninsula around Cupertino and Sunnyvale was fruit orchards and farmland. Now replaced with business parks and restaurants, but still with lots of trees and parks. Manhattan doesn't match that wide open feeling; a lot of boroughs feel like San Francisco neighborhoods but no way Apple would build a large building in the city (although the Apple stores are impressive). SF, although rapidly changing with new skyscrapers, is small compared to Manhatttan but still seems to busy for Apple's taste.