Two words: sex trafficking.

(To elaborate - strip club owners would often set up dorms where women hung out all day doing cam stuff. They would "import" the women, but eventually the porn companies came up with a less risky idea. They simply went to the origin countries and set up (with the help of the shadier people) these porn dorms. No need to illegally bring talent into other countries.)

What cerrelio is describing happens in my area, too. Another common technique is a modification of pickup-artist stuff where they make lots of fraudulent promises, push them into more risky stuff, often pressure them to do initial stuff in isolation, and/or use drugs for dependence. This is not to say that many women don't do it just for the money, fun, etc. There's groups that use those techniques to pull them. It's those that push them which we're referring to.

I don't know the ratio but there's a lot of pushers.

More like Russia over Hungary over Czech and Romania. Russians have their safe heaven in Russia because there's no foreign competition, and the mafia-like connections do help. Hungary's golden age is over.