Some industries or businesses or branches of human activity attract certain types of people.
You can leave Wall Street to set up a brokerage or investment firm somewhere else, but eventually the corrupt types will follow you there.
You can set up a 100% heterosexual theater troupe in a 100% heterosexual city, but sooner or later, the gays will find you.
Same thing with motion pictures, modelling, etc. Sleazy guys will always find a way in.
Well OK. I guess ban the industry then.