Are you sure that you understand the quote that you posted? The quote is saying that prostitution is comparable to patriarchal marriage. The phrase "an openly legalised community of women", is saying that marriage is a legalized form of prostitution. That is to say that marriage under a capitalist society, where a women raises children at home while the man goes to work for a wage, is equal to prostitution, because the woman is financially dependent on the man and is required to have sex with the man. I don't see you condemning every marriage that exists under capitalism. You are in fact saying that engaging in prostitution is worse than marriage, when this quote that you posted is saying that prostitution is equal to marriage. It is not saying that prostitution is worse than marriage. So if you condemn the practice of sex work for exchanging sex for money, you must also equally condemn every marriage under capitalism because that is also an exchanging sex for money.