The more it changes, it remains the same.
My paternal Grandfather came to the US at age 14 looking for a better life. He was a European country dweller literally starving to death. On arrival he worked building railroads and lived in a packing crate. By 1900 he saved enough to bring over his younger brother.
By todays standards we call this child abuse or child labor. But would it have been better if they starved in rural Europe? Sounds hard to believe, with Europe, immigration, etc. but true.The developing world today is just like the US then, only the immigration is internal. As long as Earth is able to sustain all this development we should all be OK. If it is not, both the rich and poor are doomed.