Asklemmy

Marx's observations of Capitalism and markets indicated that as they grow more complex and advanced, they centralize and require more advanced administration. The quote I am specifically referencing is indeed about attacking notions of equivalence, but in the background he very clearly mentions "deductions for social funds," etc etc.

In order to abolish class, all ownership must be equal over all industry. Decentralized networks of communes that trade with each other doesn't accomplish this, it makes everyone a petite-bourgeois owner of that which is within their commune, as they do not control other communes. There must be some form of centralized planning to make ownership equal across all of society.

Abolition of private property can only truly be made possible through a single world government. There can be units for local control, but these must be subservient to the whole in order for class to truly be abolished.

If we are allowed to pull from Engels, he even directly references this as the "Administration of Things," as a post-State society:

Although the knowledge that economic conditions are the basis of political institutions appears here only in embryo, what is already very plainly expressed is the transition from political rule over men to the administration of things and the guidance of the processes of production -- that is to say, the "abolition of the state", about which there has recently been so much noise.

Socialism: Utopian and Scientific