In other words, Bethesda's decision to make Vault 101 a dystopia probably had little to do with City of Ember, it's just the nature of the beast and both are based on much older literature that's become cliche at this point.
I think the reason why most dystopia oriented stories, have such over bearing figure heads.. is due to the fact that most story writers, find it hard to imagine, a broken down world.. having to ration almost every available resource.. Being able to function without an over bearing figure for all the populous to look up to, to take charge and give advice/orders
Its just hard to formulate a story based on a large community of people.. being able to work together, and survive with their rations.. with just eachother to regulate consumption
Just doesn't seem realistic
So, Yar.. like you said it would practically be impossible.. i believe the only way a community in such a world, that could live without social distress.. is a community of android human like robots