I’m in Australia where it is legal and regulated. Each state has slightly different laws, but generally I understand they are about the same. I haven’t studied the law around it, but things like pimping is illegal because it is exploitative, as is anything that resembles sex trafficking. Brothels are much safer than the streets and have to be registered with stringent health checks. They are not allowed to directly sell sex services, rather the sex workers work out of them and the brothel charges room rent, which amount to 50% of the fee. The girls are in charge of what happens in the room, which by law includes a health checks. There are also massage parlours and spas, which provide erotic massage with a happy ending. I occasionally attend a nearby spa place which is really nice, you have the traditional one by one introduction to the girls, then the manager comes over to ask who you are interested in, you pay them, and the girl comes over when ready and takes you downstairs to the private spa rooms. Besides the spa, there is a massage table for the happy ending if you choose. They can offer “extras” which you pay them directly for, it never involves the house. There are also escorts, the same as anywhere in the world, they come to you, good for the travelling businessman in a hotel.