If a 52-story office building at the site is 80% vacant or more, you can be sure that no developer with even a modicum of business sense is going to construct 8+ million square feet of office space next door.
I predict that -- due primarily to this issue -- none of the various designs under consideration for the site will ever be built to completion.
Here's a list of current a future tenants as of August;
Silverstein Properties
Ameriprise Financial Inc.
New York Academy of Sciences
Mansueto Ventures LLC - business publisher, Fast Company
Darby & Darby P.C.
Moody's Investor's Service
But just as surely, eventually, perhaps with some time, there will be those who will not be afraid to once again reach for the heavens, and live and thrive in a country and a society whose hopes and dreams can't be defeated by the barbarians who seek to kill them. It is to them, and those who would be inspired by them to carry the dream forward, that we should dedicate our efforts to rebuilding the magnificence that was lost there, but should rise once again.