Why would you call the landlord instead of the police? I'll tell you why you needed to do it for this metaphor - because Kiwi Farms doesn't break any laws and "drug spots" do.
Now, we're deputizing landlords. If that isn't the perfect public-private partnership, I don't know what is.
Who is 'deputizing' a landlord? The police are going to be much slower and ineffective in dealing with the problem than the landlord is, and why shouldn't a landlord take into consideration the effect their renters have on the neighbors in deciding who to rent to.
Now, we're deputizing landlords. If that isn't the perfect public-private partnership, I don't know what is.