These conclusions apply to the third world, not the rest of us. Here in Europe for example, anyone can study and become an entrepreneur (I did it, with pretty much 0 wealth in the family).
The unemployment benefit is usually enough to cover material living costs and to have all the basics, like shelter, food in a fridge, electricity, running water, even entertainment like TV, phone, computer.
People have vastly different understandings of poverty and if you define it relative to the median income, you will by definition always have poverty.
Let's say I want to become a doctor and not an entrepreneur?
Is it not the case in USA? I have read about doctors coming out of med school with lots of debt, but I had presumed that these loans are reasonably available and would not prevent someone from a poor family from studying there.