Historically speaking, groups that are given everything they demand don't dissolve; they ask for more stuff. This is regardless of the "goodness" or "badness" of the demands.
So there are times when it works and times when it doesn't, but we can be pretty sure it won't work here.
That's what is so vitally important about the amorphous collective form of Anonymous and even later Occupy Wall Street. Without a clear head to cut off or discredit the movement can continue with its goals even if it loses a few people.