Stallman's job isn't to "win". It's to defend a certain form of expression's right to exist. There are no half-measures, no room for compromise.
Agree or disagree with Ultimatists like Stallman, I really don't care, because this isn't about you. Just know this: if the push for free software (as in speech, not beer) was gone, your range of options would be diminished, and then you'd care.
Ultimatists tend to be outside of the mainstream, mocked. Makes them easier to dismiss. Kudos to David Winer for standing up for Stallman, because haters suck.
Other contemporary Ultimatists you may have heard of, and mocked, are:
Glenn Greenwald, defense of human rights, civil liberties, the US Constitution.
Bev Harrison, opposition to touchscreens, internet voting.
Greg Palast, investigative reporter.
NARAL, defense of abortion rights.
Earth First, others, defense of the environment.
NRA, defense of gun rights.
EFF, defense of privacy rights.
ACLU, defense of civil liberties.
In conclusion, I hope that anyone who reads this thinks twice about the role Ultimatists play.