Feel free to go into the site and search for "Northampton County, Virginia". The site points out that it's one of the worst counties in the country to be either poor or middle income. I spent a big chunk of my childhood there, and attended the horrific public schools there.
I was one of the very lucky ones, and I'm now living in an affluent suburban community, watching my son attend the kinds of schools that I'm assuming you got to attend. (I'm assuming this by your comment, which shows someone who almost certainly doesn't have a deep understanding of poverty or areas with high poverty.)
Notice that the site has a median rent listed for this county of a little over $300. Think about that: You are somebody who lives in a place with a $300 rent, which means that a given landlord, when presented with the income of the area's renters, can only fill a unit if they charge $300 a month. Yes, everyone is that poor. Work is few and far between, incomes are very low, and savings are non-existent. How can you save when you can barely get by?
So without savings, how do you finance a move to a place? How do you pay a security deposit that is, by itself, triple your current rent, plus the first month's rent, assuming you landed a job in this richer area?
The education offered sucks, period. I went to college on a scholarship, and I was completely unprepared for my classes compared to the other students. I had to work over 30 hours a week while in engineering school to pay my rent/food/books/etc, which put me at a disadvantage compared to my peers. On top of that, I didn't have the knowledge base my peers had. When I graduated high school in 1999, my school only had 4 computers with internet connections for a student body of roughly 900. This is typical of poor, rural schools. How could I have learned to program like my peers from the DC suburbs?
Your characterization that these people have made a choice to not move suggests that they ever had a choice to begin with. Most of them don't, and your comment, to people like me who had to claw ourselves out of the trap, smacks of self-righteousness and contempt.