What you present is a naive fantasy. There do not exist any corporations that do not engage in coercion. Coercion is human nature. Corporations are run by humans. In the real world things are messy. Politics and capitalism go hand in hand.
Indeed, that's the problem. The state gains support of corporations by "partnering" with them. I will certainly not dispute that a free market system is often perverted by state cronyism.
In the west. Yet. They can and do that in poor/failed states, even if indirectly (by funding local mercenary armies).
Also, there are many that could kill you and get away with it even in a western democracy. It may not be "legal" if the public ever found out (it won't), but the end result will be the same - you'll be dead.
The current, legal solution is to drive you to financial ruin. Equally effective as means of coercion.
