The King-Builder, Leopold II of Belgium, was at home a popular, benign monarch who did not kill anyone. There he was controlled by a democratic state (at least according to the standards of that time.)
But in Congo, where he became a dictator, kept in check by no-one, he murdered several million people.
When Dany realized she would lose power if she chose to be the kind-hearted dictator, she chose fear. Her mistake was, of course, that she didn't go all the way. Jon Snow should have been sleeping with the fishes.
Professor Bruce Bueno de Mesquita writes about the logic (from the dictator's perspective in The Dictator's Handbook. A dictator wants to stay in power, and the only way to do that as a dictator is through oppression and fear.
Therefore many must share the power, and no-one must end up with to much power by himself. Power corrupts, and absolute power corrupts absolutely.
Warp is not just about new technology, but also about free thoughts, free ideas.
The reason we are building a global community is that we believe this is where the world's most exciting ideas will be born, and allow us to both accelerate new technology and gain freer humans.
Smart technology and free thoughts are the most powerful things we have. More powerful than a whole bunch of dragons.