Did it occur to you that some may stay because they enjoy the work? I worked in a manufacturing environment for a few years at the beginning of my career and loved every minute of it. Sure, we worked hard and weren't paid much, but the comradery among fellow employees was the best ever in my career and the regular overtime made up for the modest wages. The company paid for my education and I eventually left manufacturing for an easier job with a nice raise and an office at the same company. At the time, I felt like I had made it and somehow got away from that horrible manufacturing job. Looking back now, I should've stayed there. It was the best job I ever had.
Steve Ritchie often talks about visiting the line workers regularly and knows many by name. These aren't migrant workers with new faces showing up on the line every week. Building pinball machines isn't the same as picking fruit. These are skilled and valued employees. Wouldn't surprise me at all if many of them are very happy with their jobs and proud of the products they produce.
