I think you're turning your disillusionment towards the Capitalist framework into nihilism about analysis of structures. Marxists frequently posit structures like the Soviet system, which feature both local, tight-knit councils and larger councils made up of representatives of these councils, resulting in a comprehensively democratic system. Without these higher rungs, large-scale planning can't exist effectively, which means a fall in the level of production and a decrease in the ability of humanity to satisfy its needs.