The bone of contention in Stallman’s eyes is Valve’s frequent use of Digital Rights Management (DRM) within its software. Rights-encumbered software is, Stallman writes on his blog, ‘unethical’.
“They deny freedom to their users. If you want freedom, one requisite for it is not having non-free programs on your computer.”
DRM is intended to prevent unauthorised copying or distribution of game titles – a mechanism vital the survival of many digital content distributers.
Linus Torvalds, the creator of the Linux kernel, has already ‘Ok’d’ the notion of companies releasing copy-protected software - despite the fact that he does not personally like the idea.