@ Clayton -
I disagree with you about the inefficacy of saying “In an X society”, as we can perform basic comparisons such as “With tariff N in land X, good P will be higher in price than in land Y, which enforces no such tariff or any for that matter”. This is an uncontroversial statement I would think. But you’re right however, that when largescale changes in the political economy take place such as patent abolition or removal of all regulations, we can’t know what kind of institutions are going to emerge. Many of these manipulations of political economy are built off of each other or cancel each other out, creating unique institutions only in combination or struggle with each other, but we can know which types aren’t going to emerge, which is really all the “In an X society”-people are trying to do. If they’re trying to do more, they’re painting pictures. Is that what you were saying in the first place?
Secondly, left- and right- anarchism are ultimately distinguished by a major characteristic: property norms. They could live in peaceful adjacency of the leftists are willing to respect that and not attack out of jealousy or justice for the oppressed workers, but that is another area of anarchy which we can make a priori statements about.
On a somewhat unrelated note, it seems that the character of the people more than anything will define the shape of society, whether they be under autocratic rule or truly free. A group of truly free people whose values are only those of consumerism, short-sightedness, libertinism and unoriginality will have their society quickly degenerate into a smoldering pile of hot fecal. There are certain things which theories of political economy and economics just cannot touch, like the integrity of a people and the quality of their culture.