They are pushing for corporate police over government police. It doesn't last long though. The places that have done this goes back to government police because companies end up charging the cities/towns too much. I don't think these politicians are looking at history. This is just going to back fire on them.
Only a few places can do this for long. Like closed neighborhoods and small towns. It's just not feasible on a larger scale especially since this can be used against cities and states. The federal government can step in and tell them, they aren't allowed to have a private army.