Regarding visibility sex venues have to be either invisible (as you show us here) or are confined to the restricted red light areas with controlled and monopolised space and thus higher risk for some forms of exploitation or pimping. However these areas are somehow officially more controlled or controllable by police.

Regarding morality and acceptance some strong forces within society doesn’t want to know of pay6 activities. These things have not to take place and at least have not to be seen by neighbours or minors. And this leads to all that dichotomy of phenomena.

Entrepreneurs then can choose either to establish business within the ghettos or do it clandestine. Both with risks and traps.

Regarding registration many societies tend to enforce control anyway. Venues have to be licensed and prostitutes to be registered by police or medical inspectors.

This often means control and duties without rights and acceptance. The arena for social problems.

And society has established the tradition to reacts with double standards…

The boundaries breaking pay6-lifestyle between sex and business between private and public seems still to be to provocative for decent human solutions.