i think the real issue is that the licensed brothels complain. They have a heavy cost of compliance, licencing fees etc. The ML's dont pay this. SO the licensed brothel down the road gets the shits and reports the massage shop to the coppers. the coppers get pressure to do something as the brothel pays fees to the government.....

the other scenario is that some punters wife finds out where he has been and reports the massage shop for offering sexual services.