The original batch died, the others who tried to follow and prolong it all caved in before Maggie did. As I said you do not negotiate with terrorists. These people were terrorists, unless you are one of those who believes they were freedom fighters or other nonsense like that.Ummm.... it "broke" in that the participants all died. Ten of them. And the warden gave in because of the PR nightmare it caused. They won. She just drew it out, let them die, and handed the Provos a massive PR victory.
I suspect the warden gave the demands because his prison staff were getting murdered by the provos, though I'll note normal English prisons had similar rules.