Your false assumption is they have the choice of not doing that.

I grew up in such a place. Very few people made it out, physically or culturally. They are like black holes, and honestly, a lot of people who try to get out, get punished, harassed, and bullied into going back to those places.

I got out of my small town, but even to this day, 30 years after I have gone, people still use that fact about my life to harass me, bully me, and dismiss me as a terrible person who they should not have any respect for because they grew up in a sophisticated urban/liberal area. It's INSANE. I have had dozens of people in my life scream insults, tell me I should have just died/been born, and how I 'stole' my education/job from someone MORE DESERVING than myself. To this day people find out where I grew up and they just totally refuse to socialize with me anymore because of their incredibly hostility/bias towards those of us who grew up in small conservative minded towns.