Democracy as an unstable equilibrium.
Starting from a universal democracy where actions are effected by consensus, we next arrive at a situation where judges must referee actions where the rights of seperate parties collide.
At first the judges are given minor but useful powers by the people. Some judges however decide those minor powers are just too minor, and the people just too unruly.
So the judges all get together and vote themselves greater powers and less control over how and when they should use those powers.
The stable equilibrium is achieved finally when the judges have all powers and no controls. The people who are not obedient slaves to the judges authority are quickly put out-of-the-way by whatever means necessary. The judges themselves do not see this as the opposite of a productive free society, they see their own task as the necessarity of not allowing a descent into anarchy.