From my observations, having low parental involvement and excessively unstructured upbringing doesn't automatically produce determined and self-directed adults. From my familiarity with several small towns, I would actually say it does the opposite. I can think of many people I knew as a kid who ended up stuck in small towns at dead-end jobs simply because inertia was the only thing they knew. Nobody ever jumped into their lives to push them to try different things or explore paths that weren't sitting right in front of them.