This is the epitome of a victimless crime. It's the government claiming "victim" because they don't get a cut of the deal.
It can have victims but that is created when it is a black market trade.
When the women cant turn to law enforcement they cant report violence against them, rape, or even if they have been kidnapped and are being forced to sell themselves.
As soon as its legalized many of those issues virtually disappear, and because of regular testing it can be much safer for everyone