I see today's Court ruling very differently than most here seem to.
First, the Court acknowledged in its ruling that "out-calls" are effectively legal, and are probably less impacted by today's decision than other forms of service.
Second, by striking down the bawdy-house provisions, the Court is demanding that municipal governments act to fill the licensing void being created: that means that, for example, each City Council will likely act quickly to limit the number of legal "brothels" to just one or two per municipality, and restrict where they may be located to industrial areas of the City, much as most City Councils across Ontario have done to regulate Strip Clubs (exceptions having been grandfathered in place for Strip Clubs, no such exceptions exist for brothels).
This will mean that FEWER options will exist for "brothels" than exist today for in-call locations, and that landlords will have increased powers to throw out any tenant suspected of running an unlicensed business out of residential accommodations (whether her home or otherwise). Regulations may also require various client records to be retained by the "brothel", with the potential of publishing john lists as required to shame visitors ("for their own safety", of course, in case any disease were ever discovered among the service providers).
Further, by bringing in-calls above board, legally speaking, and to ensure regulations are being met, municipalities will be free to apply similar regulations to any out-call agency or provider, again requiring licensing, records, and disease testing for anyone found to be advertising services.
Sure, criminal sanction would no longer be available, but if a city fines someone $10,000 per occurrence is there an effective difference?