Yeah they have, but being broke poor in those developing nations sucks much more than in the US. Their development is mostly reflected in the lifestyle of middle and upper class not of the poor. You have no idea how good the poor in the US have it compared to large parts of the world.
You said luxury life, that is different than saying the poor in USA are better off than the poor in for example China. American poor don't live as well as luxury life in China.
Why use China? I’d rather be poor in the US than rich in DRC, Sudan, Yemen, Libya, eritrea, Somalia, Bangladesh, Pakistan, Afghanistan, Syria, Haiti, etc etc
Using the second largest economy which has many mega cities you can tour on Google earth and plenty of millionaires and billionaires isn’t really the right comparison. Like using Japan or Germany.
Well, 71% of the world’s surface is ocean and about 10% is desert. So that’s over 81% of the planet. I think we can now both agree that you are completely wrong and I am completely right.