There are plumbing and fire suppression issues for conversation of office buildings into residential space.
Very expensive....
That's just "Minor Red-Tape" problems for developers.
Here's the real problem:
NYC is Finished...(long version:move slider to 10:10 in video)
NYC is Finished...(short version:move slider to 13:20 in video)
Do Dem's only have one solution for all problems? Throw more money at it?
Many "New Yawkers" are in fear of "Being seriously killed"; if they ride the subway.
So, take several lines out of service; remove all rails and everything else out. Now you have a great big "sewer pipe".
New Yawkers can now be happy when they flush, they know that Jersey and Filthydelphia needs the water.../s