You read correctly the first time. It’s a lot more difficult to entrap sex workers in patriarchal hierarchies than a housewife (for instance)… this should not be too difficult to understand.
This isn’t a capitalist thing.
All sex work in the world today exists under a capitalist mode of production - as far as I can tell, there is (officially, at least) no such thing as “publicly-funded” sex work… and that is unfortunate.