Most people (at least, that I know) do not hire private security teams to police their homes. And the ones that do pay companies for security typically stop at

Most people (at least, that I know) do not hire private security teams to police their homes. And the ones that do pay companies for security typically stop at surveillance (cameras, motion detectors, door detectors, etc). These only help to prevent intrusion with the threat of detection (the intruders recognizable face on camera). Most private buildings are not hardened fortresses capable of state-of-the-art attacks and I personally don't think it's reasonable to expect them to be.