Since "free" refers to freedom, not to price, there is no contradiction between selling copies and free software. In fact, the freedom to sell copies is crucial: collections of free software sold on CD-ROMs are important for the community, and selling them is an important way to raise funds for free software development.
Most of the FSF's income used to come from sales of copies of free software and of other related services (CD-ROMs of source code, CD-ROMs with binaries, nicely printed manuals, all with the freedom to redistribute and modify), and Deluxe Distributions (distributions for which we built the whole collection of software for the customer's choice of platform).
[^] # Re: Tabassage
Posté par patrick_g (site web personnel) . En réponse à la dépêche Ubuntu Edge, premier smartphone Canonical : convergent, haut de gamme, financement participatif. Évalué à 2.
Et en plus tu ne connais même pas tes classiques ;-)
Extrait de https://www.gnu.org/gnu/thegnuproject.html