In some cases but you can't deny the fact that some choose to be what they have rather than what they want to become. To tell you, I live in a poor, messy, and outrageous family. I supported my own self in going to college with my family being in riot. My mother (single mom) used to be abused by her siblings so she can't support me.
I worked my ass off. Worked in dawn till noon and study afternoon till 9:30 in the evening. If you want it, you'll do something to make it happen. Poverty is never a hindrance to success.