Impressive argument...
Given how things go when people adopt Marxism or one of its derivatives, I think it's safe to say that it's incorrect. Capitalism is the only system available that actually uplifts the most vulnerable in society, or at least gives the opportunity for low-level monetary redistribution to keep them from starving. Poverty by UN standards was cut in half in the first 13 years of the 21st century, the aim was within 15 years. That wasn't Marxism or Socialism or Communism. That was Capitalism. Capitalism creates excess, and by that excess, a society can care for its most vulnerable. Yes, the wealth inequality is BIG... but who gives a God damn about that when people aren't selling human body parts in the streets like in Communist Russia, or when people aren't forced into work camps for GENERATIONS like in modern day North Korea, or anyone with glasses being round up and killed in Cambodia due to suspicions that they were educated and successful. In fact, I am currently on welfare, I am the lower class, the 'proletariat', and that would not exist if not for the firm foundations of Capitalism beneath it. If not for Capitalism, I would be on the street, and I would be starving to death.
When I see the rich, I don't think "you bastard, you took that from me" or "you bastard, you cheated your way to the top" or "you bastard, I should vote for people who would FORCE you to hand over some of your money so that I could have more." No, I think "if you were some incompetent and corrupt stooge, you would have lost your money by now or you WILL lose it before long... you are doing something right, you're working hard, it's because of people like you that others have jobs, that there's such affordable goods on store shelves, and it's from your taxes that my miserable and suffering ass gets to live. Thank you, carry on, and hopefully someday I could earn the right to live like you do by likewise benefiting society."
Marxism is bloody toxic, it pushes people to fuel inner greed, to view those who have as oppressors who need to be forcefully torn down, ripped apart, and handed out. It turns people into cannibals who wish to eat their own fellow man, but what's worse, is there's an Old Testament twist to it. Abel was an ideal whom everyone respected, he made sacrifices to God that pleased Him, while his brother Cain wasn't anywhere near as useful. Cain wanted God's favour too, but could not earn it. He was vengeful for his idealistic brother, the person he should aspire to be like, but like the snake he is he killed this good and beneficial member of biblical society. The rich are the ideal to aspire towards because they are among the most beneficial to society, they are doing the most good. Marxists wish to be rid of this ideal, this good, even if it's just a Kulak who owned a farm and made enough to hire others. Nope, can't have that, you and your pregnant wife will be dragged to the field and shot.