Because patients at a mental health facility are at times held against their will, allowing a private company to exert such power over others is dangerous. The private company has an incentive to hold a person once they are within the facility, simply put, patients = tax dollars. More patients, more tax dollars. The government doesn't intrinsically have such a motivation. We, as tax payers, will pay either way, I'd prefer my money not be paid to a corporation to hold my fellow citizens, I respectfully request that such power be left to my government.