But you can’t open one in New York City legally. Just acknowledge that point.

An exception by definition is a phenomenon with lower frequency than the general trend. Of the 50 us states only one has legal prostitution and only in highly regulated areas. Of the countries of the world it is similarly infrequent and thus an exception to the general rule that it is illegal.

Further the fact that it is illegal anywhere supports my point that it’s possible to regulate businesses based on their harm.