Yes but you want the best of your labor pool.

As for sweatshops in China, these are the growing pains of a developing economy. The work conditions there suck but I bet they are better than being bent over in a rice field all day. You are also rapidly seeing this change as the economy becomes more developed there, even in the face of an oppressive government.

https://www.wsj.com/articles/china-is-working-its-way-up-fro...

The construction camps in Dubai is about government corruption. They lure in overseas workers then take away their passports so they can't leave. Not exactly a free labor market.

Again prostitution in the US is not a free labor market because of government interference. If you go to places where prostitution is legal, the girls there make pretty good money.

Most of the areas where you can point to the worst employment situations is because of government interference in a market place.

You're still looking at the best case scenario (ie. a person willingly entering into prostitution), while blind to the worst. The are reason why unions, minimum wage, unemployment insurance, universal healthcare is so common around the world.

How do any of those things fix slavery? Or are you using a different definition for "willing" more akin to "would strongly prefer to".

I don't understand your questions exactly, but I was differentiating between "I do prostitution because I don't mind it and I make lots of money" vs. "I have to sleep with landlord because my minimum wage job doesn't pay the rent".