Actually, I'd draw a distinction between Broken Steel and, say, shaving content away from video games for more money which we know happens all the time. Fallout 3's ending was the "original" ending they had planned but it was ridiculously unpopular because it was bullshit. So Bethesda, instead, sold fans a new ending which was more popular.
I don't mind paying for that.
This is a contrast to, say, Javik who was supposed to be in Mass Effect 3, but they snipped him away to charge more or the bullshit that is virtually the entirety of Deus Ex: Mankind Divide's DLC.