If this is supposed to be an analogy for the escort scene in Toronto, then it is flawed. Whereas in the UK it was ruled that sex-for-hire doesn't come with any guarantee of privacy, many of the women of Canada advertise "discretion" and that "no records are kept."
So English prostitutes and Canadian "escorts" are not selling the same service.
When a Canadian escort sells time and not sex, and it is further advertised as confidential, then it can be argued that she is licensing the billed hour(s) to the client and that the client owns all rights to that time.