Human trafficking is big business for the criminals who make their living off of it. According to international agencies, the black market in human trafficking is around $32 billion. The traffickers make their money by kidnapping women and children and then selling them for profit. It is just like the slave trade.
The money inovled in this activity exists because men continue to pay brothels, pimps and massage parlors money to have sex with women. Even though they know that the women are forced to have sex with them, the men who visit these types of prostitution do not care. They just want the sex.
Many feel that education is necessary so that men will understand that the women they are paying to have sex with are doing so against their will, but I don't think that it will make much difference to them. I'm pretty sure that all the men who visit these types of establishment know deep down that no women would want to have sex with 10 different guys every day. The women have no choice in the matter. They can't turn down customers, or say that they insist on using safe practices. They are forced to do whatever the men want because they paid for it.
It is a terrible economic system and it must stop.