Who said Detroit was out? There's billions in construction going on right now as you type. A bunch of new ones starting too. Not every project always works out exactly as announced, that's usual business.

It seems this is happening all over the US as well, so you're wrong.

A recent AIA survey found that about 15% of architecture firms in the U.S. have seen projects canceled, 40% have seen projects significantly delayed or put on hold and 30% have seen projects scaled back.
https://www.constructiondive.com/new...ish-ow/568295/