We had a global economy that had been artificially launched into orbit by people buying crap they didn't need with money they didn't have. When the money they didn't have dried up, then they couldn't buy the things they didn't need. And then all the boats that would have carried the things they didn't need to the stores that now can't pay their rent wound up parked here.
The only "green shoots" I see there are kelp wrapped around the anchor chains of idled container ships.
(H/T to Billy Beck.)