Sorry mate, but capitalism and integration into the world economy has lifted million(billions?) out of poverty even from the countries on the wrong side of capitalism (the ones being exploited by the richer ones).
Look at present day South Korea vs North Korea. Post-WW2 South Korea was poorer than the North, but after the sixties the South economically skyrocketed while the North stil wallows in absolute poverty.
A lot of Asia post-WW2(Japan, Taiwan, Korea, India, etc) became the sweatshop of the west/US, or "on the wrong side of capitalism" to quote you, and look at them now. Would they have been better off today without that phase? That's what you have to look at.