@Catsandcatsandcats dude, Marx's whole schtick was that the capitalist class, defined by receiving income from capital, were exploiting the proletarian class, defined by receiving income from labour. How does that work when the proletariat own capital too? And what do you think long-term pension funds are investing in, if not the means of production?
That's hardly a good summation of what Marx's writings are about, but...assuming it's accurate, what makes you think 401k's aren't a further exploitation of the working class? We all saw the horror stories of people who retired in '08 and lost their entire pensions--which is why so many workers and leftists opposed defined-benefit pensions plans; it was a Trojan horse to further tie workers' fates to those of capital, essentially the capitalist class extracting dues from workers in the guise of a (shitty) pension plan.
@Catsandcatsandcats Someone has to work in order for there to be roofs. And capitalism's system for arranging this — where employers must to some extent compete for labour — is far more just than communism, where the power is placed in the hands of the State, an organisation which faces *no* competition.
I strongly recommend you read _Time Will Run Back_ by Henry Hazlitt, to understand where power *truly* lies under capitalism (hint: it's not with your boss, nor 'the rich').