I suppose my point is that Marxism and anarchism answer the same question in many ways in the opposite direction. Marxist analysis points to collectivization of production and distribution, and anarchism points to communalization and horizontalism. You can't really reconcile these differences, as much as some authors have tried. Regarding points whete anarchists developed more Marxist-like political organizing structures, I see this more as reality necessitating these, than Marxism being compatible with anarchism.