America can't build anymore because America's executives have chosen to steal every piece of wealth they can take without leaving anything behind to build for the future.
American business culture has become far more interested in zero-sum rentierism and financialization that rapidly concentrates existing wealth in the hands of the wealthy than in technological innovation that creates new wealth over the longer term.
The collapse of American industry is the entirely predictable consequence.
See also
https://www.forbes.com/sites/stevedenning/2011/11/18/clayton...
for a similar but slightly different take.