I'd preface my remarks by saying I'm not sure this is really an issue that the Canadian Marketing Association is pushing. That being said, I wear other hats, so I would say that the practice is a bit mixed across the country with regard to voluntary disclosure to law enforcement. There are a number of service providers, for example, that absolutely refuse to give anything to law enforcement without a warrant.
On February 17th, 2015. See this statement in context.