I read Floki's links and googled lumidolls. Scanned some other articles and looked at the lumidolls website too. I still don't see a straight doll brothel being profitable outside of Asia. Maybe I'm totally wrong but the articles and website left me with the impression that the $$ is in selling the dolls not in the brothel. The brothel does get them some free exposure. Not a business I'd be interested in, but I can imagine that selling the dolls could be profitable and sustainable. Repeat customers being sold a new model every couple years.
Looking at this is kind of making my skin crawl so I'm done now.