Government is a necessary evil with a monopoly on the initiation of force, and as such a primary concern with government is restraining it. Democracy is all about restraining and also providing a (usually) non-violent pressure valve to avoid revolutions and insurrections that destabilize the entire system or threaten to cause government's restraints on the use of force to be removed.

Unrestrained government was a really significant cause of death in the early 20th century.

Private businesses have an entirely different purpose.