I wouldn;t be surprised by an increase in BP ads. In the long run, C36 could make this the future simply because the numbers game. It's too big to police. To investigate & collect evidence on every single lead from user-posted online ads would require most police forces to dedicate almost all manpower & hours to that one task.
One of the sad things about C36 - if it were ever broadly enforced - is that eventually it would make established, accountable agencies and independents (the ones with fixed addresses & phone numbers) completely untenable, with both the operators & customers being sitting ducks.
The leverage would shift to pimps who run highly mobile, no-overhead operations, posting ads from random public computers, and from a rotation of dozens of web-based e-mail accounts, who can move their assets every couple of days between various trick-pads, motel rooms and even vehicles. There is simply nowhere near the resources for LE in any large or medium sized municipality to play this shell game.
Sex addicts will quickly accept the slightly elevated risk of a sting in order to keep getting their fix. Other customers will be more reluctant, but those who mostly depend on the hobby for their sex will eventually break down and look past the risks and moral objections.
Sp's who can't quickly transition out of the business will have no other choice but to emulate this very dangerous way of working.
I think that's why you're seeing the unprecedented criticism & rejection of an anti-prostitution law coming from unlikely sources like Premiers, municipalities and Police departments.