Nearly six in 10 US young adults live within 10 miles of where they grew up
A lot of upperwardly mobile, ambitious people don't realize this, or they generally understand it only in terms of chastising their high school peers who stayed home.  If you build a society based on the assumption everyone will simply move and re-skill to the regions with economic opportunity, you get a lot of regions of bitter people who stayed behind somewhere and watched their local economy get destroyed by trade deals and technological advances, and that's how you get an anti-globalization populist political movement.