[Jasper_]

Fundamentalists take hardline stances to problems. To Stallman, one of the most unethical, immoral things one can do is to willingly run a computer program that they do not have permissions to modify.

Very few people in the world, even most FOSS contributors and developers, share that belief that strongly. They might feel like FOSS programs give them certain advantages and rights, but morals? Stallman has mentioned that he would rather go homeless than run proprietary software. That level of devotion is exceedingly rare.

To approach someone, even a Linux user, and tell them that they need to give up their convenience for free software because what they are doing is immoral, that's a very hard sell. This is one reason GNU has mostly produced free software clones of better, commercial software, where practical concerns take a backseat to GPL.