I honestly think the Ayn Rand crowd are missing a few circuits. Well, that's a crude way of putting it, but let's just say it's like color blindness but for ethics. No amount of oratory will make a color-blind person see red. And that's just the way it is.

Those "circuits" play an important role in regulating how groups behave. Lacking them, you open the door for extremely bad things to happen. This is why libertarianism and related ideologies should be treated with extreme caution at best.