I think it'd be an amazing PR move, to be honest, and one Amazon would profit much from and suffer minimal risk. Amazon has been criticized lately for eating retail and causing economic upheaval. Going into Detroit turns all that around.

Shinola has been capitalizing on Detroitness. So has Chrysler, successfully.

Things are moving back from burbs into the city and gaining visibility. These are the successful test cases. "Imported from Detroit"

(The bankruptcy itself hasn't prevented much from improving in Detroit. The bankruptcy turned out to be the launchpad.)