A new above ground track comes nowhere near the cost of updating a subway system below an extremely dense metropolis that will attempt to keep running 24/7/365?

A new above ground track comes nowhere near the cost of updating a subway system below an extremely dense metropolis that will attempt to keep running 24/7/365? Not much of a shocker there. That’s a true apples to oranges. It is true that corruption has resulted in exorbitant cost over runs by the MTA but I think this is a silly comparison.