The good news is that Canada has much better separation between legislation and law enforcement than the U.S. This is a good article about how the process works in the U.S.
I think this is the main point. Here, LE and the prosecutors offices are interested only to prosecute street prostitution and, of course anything else truly criminal involving constraints by third parties. Take massage parlors for exemple. My understanding is that is is quite easy for the city council in USA to order LE to bust the place. It is not, here. Laval politicians, for instance, decided that they will not tolerate parlors anymore except for two or three located in industrial zonings. LE will not accept busting the places, mainly because the provincial prosecutor does not want them to do so. They will make visits but nothing else. So the only way for the city is by refusing to issu business permits, leading to eventual non criminal prosecutions. The legal principal should be quite clear: the criminal code should be used to prosecute real crimes, not morality.
As for the publicity of sexual services, I have no idea. We have not seen any clamp down initiatives yet. All escort agencies have online publicity. The impacts were mainly on the printed press. However I would not be surprised if the US were pressing the Canadian government to make sure american entrepreneurs do not move their servers to Canada. But that's pure speculation.