One of the most pragmatic, matter-of-fact Marxist economists, R. Wolff, acknowledges the foibles, workarounds and tendencies... how people behave in reality, rather than how some people should like to make them, or would like, them to behave, or that libertarian, unregulated, utopian capitalist economics is some meritocratic magic wand that solves all externalities and inequalities in "the market," usually with "trickle down" economics that never happens. Reality is most definitely none of those things, even though people still try to pretend otherwise, likely for their own benefit.