I can tell you what I hear on the ground. When investigations relate to pimps, it works; the police have techniques to be able to do those investigations. However, when investigations involve prostitutors, it is extremely complicated to prove the exchange of services for money. In fact, the police will sometimes use double agents to investigate. At present, some people are even mounting challenges based on the fact that there were double agents. So the question of whether it is legitimate to use double agents is being reopened.
Essentially, it is extremely difficult to show that there was a purchase of sexual services. The police have to use double agents. They have to be able to observe a particular transaction several times, but it is very difficult to do it in massage parlours, for example, which are brothels, because the transaction takes place in a room and the owner of the establishment doesn't touch the money. The police are therefore unable to see whether money really changes hands. It is extremely complex.
As a result, we need to look at how we can give the police more tools. For that, I don't know whether it would be enough to amend the law or we should instead look into police practices. It's up to you to decide.
The other problem is that the prostituted individuals or individuals who are trapped in these systems don't know that they are protected by the law. They really think that if they make a report, they might suffer the consequences. Information in this regard is severely lacking.