I've always found it curious that some women will defend other women's right to do with their body as they please in some circumstances, such as abortion; but not in others, i.e. prostitution.
Yes, there are definitely likely to be unsavoury avenues into becoming a WG (addiction, trafficking, economic necessity), and we all do our best to cut off those avenues by being alert to whether a WG is there unwillingly, because we're pretty much all decent human beings.
Equally, there are those WGs who have made the conscious decision to enter that lifestyle because it suits them. Why their entry into "the oldest profession" is of such concern to other women, god knows.