He's not describing how but why. And at a fundamental level it's something that can't be overcome. If you can only have 10 of one thing, yet can have 5000 of another, and both have even remotely comparable levels of demand/necessity/etc, then the 10 is always going to end up much more valued.

Even take some sort of idealized anarcho-communal society. Imagine two people have a dispute and threaten to leave over it. One's a highly skilled doctor, and the other's a garbage collector. Our equal society's going to suddenly become just as unequal as any other simply because the doctor leaving would have a much greater negative effect than the garbage collector. And that reality would permeate in the day-to-day happenings, creating classes even in an idealized classless society.