1 Corinthians 7:4 rules out polygamy and challenges Greco-Roman sexual double standards

If the wife has authority over her husband's body, he cannot use that body with someone else. This rules out polygamy, contradicts the Greek and Roman view that men could fornicate while women couldn't, and opposes Jewish debates supporting polygamy at the time. However, the context is sexual rights specifically, not all authority -- so it doesn't disprove complementarianism as egalitarians claim.