A cop can't catch every speeder on the 401. But they do catch one once in a while. So don't be shocked if a cop finally pulls you over.
Same goes for sex work. Remember, prostitution still hasn't been legalized yet.
As you have said, check leolist. All the massage parlours, aside from the one I mentioned, are gone from Windsor and just a few remaining in London. Then look at the Golden Horseshow. Still lots of massage parlours choose from. The police don't work the same all across Ontario. Different areas of the province have different priorities. In Toronto, the police priority is shootings, stabbings, guns, and gangs. These crimes are an everyday occurrence here. Western Ontario has a much lower crime rate than Central Ontario. Guns, gangs, murders, stabbings in Toronto area keep cops away and too busy to deal with prostitution. Violent crimes in Western Ontario is almost non-existent compared to Toronto. Cops in Western Ontario have more time on their hands to deal with petty crimes. Therefore it's much harder to prostitute for sex when there isn't much other crime going on.