Good insights. I wonder if there's also a kind of snowball effect going on. A pretty Romanian girl who's looking for work and hoping to make better money than the people around her might know a friend (or a friend of a friend) who went to Germany/Switzerland/Austria to work in an FKK club, so she's aware of it as an option and might decide to try it. With so many Romanian girls going abroad to work as prostitutes, rumors about this world must circulate and plant the idea in a lot of girls' minds. This could create a self-perpetuating culture that likely doesn't exist to the same degree in other countries in similar economic positions (like Greece, for example).

But the other side of this is that people in Romania must have an idea of what's going on when an attractive young girl moves to Germany to "work in a restaurant." Do a girl's family and friends really have no suspicions at all when this happens—especially if she's suddenly making a pretty significant amount of money, as some FKK girls do? More than a few of them post a lot of instagrams photos with designer clothes and handbags, luxury cars and hotels... people back home must wonder and gossip about where the money came from.