That's simply not true. There are plenty of regions (many rural places) where the inhabitants have one option of where they can work due to a small number of employers and the individual's skill-set.
Meanwhile, outside of China...
As 'successful' people we can see many ways out of these arbitrary situations, even if you tie our hands behind our backs with something like "and no plan that involves your current professional skills like acquiring any old computer and doing software dev". We can also execute on our plans. For us, being poor is a choice, many of us started out that way to begin with and chose to do better than our parents. For a lot of others, it's really a lack of capability in not only seeing ways out but also precisely following instructions someone else gave them to get out. As the saying goes, you can lead a horse to fresh water... All the opportunities in the world are useless to you if you don't have the capacity to see them or execute on them.