Oh so in your world its perfectly ok for the guards to run away when the crap hits the fan as Gran said because that means they can renegotiate the contracts to charge more money. In the mean time people are having an shoot out in the street. Cops cant strike, they cant not respond to calls for emergencies. Some jobs just dont get to walk away when crap gets hard.
Id love to see the relationship between a community and its securty force every time they run away and then demand more money to act.
If the community is so messed up that they can't get a security company to contract with them or stay in there, the community itself needs to do some soul searching and figure out how to change that. This is one of things that is missing from our socialized system now. Ghettos have absolutely no incentive to change. The people can be completely dysfunctional and the government will support them on every level. In a privatized system, a two way relationship is built based on the communication between the company and the conditions of the community. These are the basic market signals that are absent because of the socialized system.
The thing that MUST be remembered is that our communities didn't just get the way they did in a vacuum. They are a product of generations of socialism. The violence and dysfunction we see now is a product of the generational removal of the market signals that tell people to change.