There was a time where people would move countries with nothing but what they can carry at a chance of improving their life. At a time where the only way to travel was by boat for weeks and the only way to communicate to relatives was by mail.
Now we balk at the idea of moving cities when it's easier than ever before, and we can communicate instantly across the world.
To be clear, it's not just "Raleigh" or "South Dakota", it's really any city outside of California + New York. I live in Richmond, an hour and a half from DC, and you can buy 2000 sqft homes for 200k.