Brothels and Business Models: Wikipedia

Brothels are considered infamous and evoke strong emotions across large parts of the world. They represent the oldest known profession known to mankind. It is interesting to note that they also have a business model in operation - as succinctly pointed out by  Wikipedia

• In the regulated brothels in Nevada, the prostitutes are contract workers who split their earnings with the house and are often expected to "tip" support staff (cleaners, limo drivers, etc.); they receive no benefits, such as health insurance, and no withholding for Social Security taxes. 
• In others, the prostitutes are employees, receiving a small fixed salary and a portion of the money spent by the customer. In this situation, sometimes known as Maison close (French for "closed house") the brothel owner receives the rest of the payment for services. 
• In still others, the prostitutes pay a fee for use of the facilities, with the brothel owner not being involved in the financial transaction between prostitute and client. This may be known as maison de passe, French for "trick house". In cases of illegal brothels, this arrangement provides some level of plausible deniability to the facility owner, who often (thinly) disguises the brothel as a massage parlor, bar, strip club or similar business. 

To read the article in http://en.wikipedia.org, please click here)