I don’t know if this is a useful distinction but in sex work it is the work that is coerced, not the sex. The capitalist system forces you to work or die but it doesn’t care if that work is building houses, flipping burgers or having sex.

Some forms of sex work is obviously rape but it feels wrong to call it rape if say a trained nurse would rather do prostitution than work at a hospital. I recognise that there is a lot of gray area there. At what point does the alternative to sex work become so bad that it is no longer voluntary?