And what of those who dissent to your "best form for society to adopt"? It takes intelligent and productive people (as in, it takes intelligent people, productive people, and people who are both) to make such a society work. When you provide no incentives for intelligence or productivity, because those incentives create inequality, then such people will complain (upsetting the balance), leave (gutting the society), sabotage (undermining the society), or simply stop caring (grinding the society to a halt). What then?
I don't think that [nor am I inclined to think did Marx]. I think capitalism exacerbates it drastically to a markedly negative effect (though not so negative as say malevolent dictatorship). Moreover I don't perceive inequality as detrimental, it's a truism that none are equal after all.
However I do certainly have communist beliefs about the best forms for society to adopt.