Yeah but that was in an active warzone where there was little to no retribution for poor behavior. If you have to live next door to the people you police, you're probably going to behave a bit better.
They run prisons, young offenders institutions and offer private security etc.
They are not known for good behaviour though.
They are known for cost-cutting, hiring people with questionable qualifications and experience, sexual assaults on minors and covering up evidence of their own incompetence and malice.
That's what I think of when people suggest privatising law enforcement and military. Greed, malice and power-mongering.
A genuine dystopia, because I don't have the same faith that you do that a profit motive will be anything other than destructive in these spheres.