@Swift He's a dragon, what did you expect? Since it's the royals vs rebels, if he removed the royals entirely, things might calm down considerably. It's a different thing how the rebels were planning to govern the place after their rebellion reached its goal, but likely they had some people planning the strategies and organising people. Maybe they were usurpers, maybe they were even imagining a republic. Who knows. At the end of the day, there's nothing they can do about a dragon. On the other hand, I fail to see why Greed would want to bother about governing masses of humans. He might as well let the rebels do whatever they want, as long as they don't bother him (and they wouldn't if they've got any wits).