This seems like free market at work. These women have social skills to sell and programmers are buying it.
The way I see it the Chinese are being more progressive than the Europeans where prostitution and drugs are legal.
In my small part of Europe (France) drugs and prostitution[1] are not legal[2].
Apart Netherlands I don't know any other country that legalized drugs. Prostitution is legal in all France's neighboring countries.
[1] to be exact, people can prostitute themselves legally, but clients and pimps are illegal.
[2] though the cops are not going out of their way to fight marijuana or paid sex between consenting adults
The Netherlands hasn't legalized anything. They haven't even decriminalized anything, AFAIK. They just voluntarily choose not to enforce against cannabis being traded and consumed, provided coffeeshops and the like remain discreet.
Portugal decriminalized plenty of drugs with set possession limits. Oddly, possessing cannabis seeds remains illegal.
Spain also tolerates private drug consumption and even lets grow shops which sell cannabis seeds to exist.
Several other European countries either have decriminalization of private consumption, as well. I think Sweden is in there, too.
(And in motherfucking China this time, apparently.)
Even if I misread it, you've jumped the gun somewhat in ascribing the most negative interpretation without compelling evidence.