That's a fairly common perception. Most often summarized in "the rich get richer, the poor poorer" (at least on a relative basis).
I was born in a Communist country, and I have another perception. Poverty has different levels. The most abject poverty is when you go hungry. My family didn't experience that, but we experienced the next step: severe food rationing. War-style rationing in peace times. 90% of the population in my city being subjected to that (the elite party members were not, obviously). My parents driving to a neighboring city to be able to buy potatoes and onions. My kids nowadays spend too much time on iPads and Xbox, I was spending too much time waiting in line to buy bread.
And I can only guess that there were hundreds of millions like me in all the Communist world (China included). For the most part this type of poverty has been eradicated.
I for one celebrate that.