That's the essence of Marxism and the obvious reason why it won't work.
Karl Marx himself recognized the reality that the only way to make his theories work would be to establish a world wide violent and oppressive oligarchy or dictatorship to force the productive people to support everyone else.
He was not smart and honest enough to acknowledge that the productive people would quickly become nonproductive and the entire scheme would collapse into the enslavement of everyone be the ruling oligarchy.
Many fools today still fall for Maex's Ponzi scheme. These fools are not smart and honest enough to recognize the fundamental flaws and violence inherent in Marxism, and they continue to insist on trying to make it work.
Something for Nothing. The oldest scam since the dawn of mankind, and people still fall for it even today.