If I understand the communist/Marxist take on this, retaining any form of capitalism just allows the reproduction of these circumstances down the line. You stop it in the short term with laws, but if you retain the power of capital then those people just buy elections, buy politicians, etc, and we're back to this scenario again.
I'm not sure I agree with everything involved with communism, but I do agree with their take on this problem. We're going through it right now in the US. We fought, literally shed blood, for the rights we have and the regulations that protect us, and then money comes in and buys a shit government to take it all away.