> Ideally everyone would be protected from random attacks on the street, not just those able to pay.
Exactly. You are advocating for a paid service, some sort of commercial company to do the enforcement. How do you think they'd generate revenue otherwise? Currently San Francisco is setup that way, you pay private security because the cops are useless. That's not like that everywhere. You should fix your police, not bandaid fix the problem for the people who can afford it while leaving the people who can't to suffer.
What you want is the ability to pay to get expedited help, to which I say is that the fair option to those who can't afford to pay for protection?