Private Police departments will replace the city police departments?

[NYC Liberal]

9. How does that work once he steps outside his house?

I mean, presumably he leaves his property.

What if something happens to him while he's out? How will the police know whether he's paid or not?
What happens if there's a major disaster and it isn't profitable to get involved or worth it to pursue the perpetrator(s)?
What if they decide his neighborhood isn't making enough money -- regardless of whether he's paying, and pull out -- giving him no chance to get police protection even if he wants it?