Where do you get this impression, because it's simply not backed by any study, or even any anecdotal information? Quite the contrary, most people attend a college within 50 miles of their home[0].
No anecdotal information? My life? I went to the local college and graduated with less than 8k in debt and no scholarships. And that study doesn't really dispute my point, most may not, but a large percentage do, and those those who do are the ones without mountains of debt.