Stefan Meretz criticizes the radical copyleft model proposed by Kleiner as being simplistic and in general incorrect, based on categories from David Ricardo that, Meretz argues, have been superseded by Marx’s analysis. The main criticism presented by Meretz is that Kleiner focuses too much in the aspects of ownership (particularly of the means of production) and circulation, while considering production itself to be a neutral sphere. Indeed, his criticism of property as “theft” only refers to the “rent”9 extracted by commercial companies exploiting wage labor, but not to sale of the commodities on the market. For Meretz, the reappropriation of the means of production is, of course, a necessary step to promote a more equal distribution of wealth. Yet, it will only succeed in transforming society to the extent that it also involves a change in the mode of production, to go beyond the logic of exploitation and exchange; without this additional transformation, worker-owned collectives tend to succumb to external pressures and end up behaving quite similarly to wage-labour based companies.10