When I was a kid the Detroit automakers bought air filters manufactured at a factory in Kenosha, Wisconsin and brake pads manufactured in Peoria, Illinois and lubricants from Fort Wayne, Indiana.

And the people working in those places provided the customer base for local and regional financial services, along with the rest of the commercial base that made small towns and provincial cities good places to live and raise a family throughout the 20th century.

And of course, a household only needed one person employed, so there was less pressure to move to a bigger city that could provide opportunities for two different careers.

Point taken, but the trend has only increased since then.