What would you think happens if you abuse this service to call security on your poor neighbors? They keep showing up? I don't think so. I do think the neighborhood watch could take it personally.
Security force is a perfectly respectable and responsible job, and many ex-police and ex-military use their skill set to get into this field.
If officers always showed up, and always showed up on time, then you would not need private citizens. Rule of law is for the government to control. Citizens just want their parents to feel safe, and be able to call security to drive through their street, when they suspect gang/drug activity.