This is a sign of growing maturity on the part of the United States. Many of these super-tall building projects make little economic sense, but are completed to validate the prestige of emerging nations, like teenage boys comparing penis sizes. Grown men are beyond that behavior, just as are grown-up nations. I discussed this in the context of rail a while back at Forbes. In that case, it seems everyone thinks the US is behind in rail, because it does not have sexy bullet trains. But in fact we have a far more developed freight network than any other country, and shift of transport to rail makes a much larger positive economic and environmental impact for cargo than for rail. It comes down to what you care about — prestige or actual performance. Again choosing performance over prestige is a sign of maturity.**
The US had a phase just like China’s, when we were emerging as a world economic and political power, and had a first generation of successful business pioneers who were unsure how to put their stamp on the world. So they competed at building tall buildings. Many of the tallest were not even private efforts. The Empire State Building was a crony enterprise from start to finish, and ended up sitting empty for years. The World Trade Center project (WTC) was a complete government boondoggle, built by a public agency at the behest of the Rockefeller family, who wanted to protect its investments in lower Manhattan. That building also sat nearly empty for years. By the way, the Ken Burns New York documentary series added a special extra episode at the end after 9/11 on the history of the WTC and really digs in to the awful crony and bureaucratic history of that project. Though Burns likely did not think of it that way, it could as easily be a documentary of public choice theory. His coverage earlier in that series of Robert Moses (featuring a lot of Robert Caro) is also excellent.
** I have always wondered if you could take this model further, and predict that once-great nations in decline (at least in decline relative to their earlier position) might not re-engage with such prestige projects, much like an aging male seeking out the young second wife and buying a Porche.
Warren Meyer, “This is a GOOD Sign for the United States”, Coyote Blog, 2015-01-15.