No it hasn't, the global poverty rate has been falling for 20+ years. 69% of people globally lived on <$5.50 a day in 2000, that number is down to 47% today.
You can also look at China and Vietnam, countries that have had drastic improvements to standards of living and collapsing poverty rates after abandoned communism. Or you could look at the divide between East Germany and West Germany or North Korea and South Korea. Or the economic collapse in Venezuela. The communist experiment was tried and it failed miserably.