Just my 5 cents. Running factory is damn hard job. 10 products built from 50 different parts having 70 different vendors is a small nightmare. So me people can manage that, but the most can’t. Most people in Western world also cannot imagine staying at conveyor belt or table doing the same assembly task whole week. I work in a factory and see this daily.
I used to work in such a factory in Germany and turn-over was high :) A large pool of uni students doing their summer breaks propped up the place. They could afford to work there for 1-2 months mentally because they knew they'd go back to university (me, too). The few long-timers on the factory floor were mostly functioning alcoholics.
I'm guessing that US needs a similar nation-wide service to connect gig-workers of all sorts to factories specifically.