Well, banks hire private security guards, have stong safes (well, back when they handled cash) etc under practical pressure and pressure from their insurers. T

Well, banks hire private security guards, have stong safes (well, back when they handled cash) etc under practical pressure and pressure from their insurers. They don't rely solely on the police. On the other hand a lemonade stand will generally rely entirely on the police and on peoples' good nature. I sure hope they aren't armed! So on the spectrum between the two, don't we want a society where almost all interactions don't rely on private security guards? I feel like there has been an explosion of private security guards over the past 30 years, but I do see them in old movies so I don't know if my impression is correct.