Look at the most pure capitalist systems in the world and you will see more corruption and 1%'ers than in the way less "pure". Like Scandinavia vs the US. It isn't rubbish at all.
Tautology, if you ask me - it's a meaningless statement that misses the point because corruptible is not binary, communism has a much worse track record re corruption than most capitalist countries. Sure, just like anything ever involving human elements, both are corruptible, but what's important is how bad does it get?