An Islamic State is a state that is based on islamic values, all of which stem from the Quran.
When everyone understands what the Quran says on any and every topic, then everything should and will be done based on these.
If a head of state, or his lackey mulla, tries to introduce anything against the Quran, all of the people will be able to see the wrong and stop it.
Unfortunately, 1200 years of mulla, king and capitalistic have blinded the muslims into a sheep like stupor which allows them to do what they want, when they want, to whom they want.
Empowering oneself with the Quran to fight wrong and enjoin right is the ultimate gaol of the Quran and why Allah gave it to us in the first place, and what did the majority do with this Book?