You keep pointing to the State as the source of the problems (and the protector of entrenched/lobbying interests, and the imprisoner). I agree with you there.
Organized labor can demand whatever they want. And if their demand aren't met, they're free to go elsewhere (or be forced to when their employer chooses to fire them rather than cave, and hire labor who doesn't make demands they don't wish to meet). Where is the problem there? When people can't agree, they must part ways. How else could a disagreement be resolved other than violence? This is good. That's a voluntary situation you're describing.