This is a question that I have given some thought. I think that B is right. There are a number of non-local theories of an anarchist society. In fact, Doug's bete noire Parecon is one of them. I think that the real gap in anarchism has always been in the question of transition, or what Wallerstein would call mid-term strategy. Anarchists can point to the new society, and tactics for working in the old, but not how to get from point a to b.
One could perhaps argue that this is also true for Marxism, but I think that the difference is that Marxism does provide a framework for thinking about this question under the guise of the dictatorship of the proletariat. The more I think about this term, the more I think it should be understood as the structuring of thinking through a problem, rather than a solution. So that thinkers ranging from Marx (in the Critique of the Gotha Program), Lenin, Luxemburg, and Althusser and beyond have used this as a sort of problematic to conceptualize a framework for considering how to transition to a new form of society when there is a class of people that benefit from the early system, a group that will invariably experience this transformation in terms of non-consent. They frame this in a number of ways, but nonetheless, it considers both the question of force, and the need to transition from one structure of common sense to another.
robert wood
> "Workers' cooperative associations are a new historical phenomenon; today
> as we witness their birth we cannot foresee their future, but only guess
> at the immense development which surely awaits them and the new political
> and social conditions they will generate. It is not only possible but
> probable that they will, in time, outgrow the limits of today's countries,
> provinces, and even states to transform the whole structure of human
> society, which will no longer be divided into nations but into industrial
> units." [M. Bakhunin]
>
> ("Industrial" is not necessarily synonymous with Dickensian heavy
> manufacturing, btw.)
>
> This type of left-libertarian thinking, which shares a lot of ground with
> council communism (Anton Pannekoek) exists in a state of tension with the
> "back to nature"/"dismantle technological civilization" stuff.
>
> -B.
>