Governments are made up of individuals, and in the case of the most corrupt governments those individuals are sock puppets to the selfish rich of the land. Whilst I agree the government will probably be the last to 'officially' recognise a non state endorsed crypto currency, I can not see how the wealth structure will change significantly?

A broken government such as Argentina may fail if their fiat fails, but the key holders to the wealth of the nation will still be at the top and will regroup after the cards have been shuffled. Bitcoin is not the elixir many believe it to be. It will not cure all evil, but hopefully at least prevent the game from being rigged.