Đó là khi người phụ nữ cũng tham gia lao động xã hội và giữa hai người không có quá nhiều chênh lệch (và đây cũng là bộ phận chủ yếu trong xã hội), còn nếu như có khả năng được sống với ông chồng giàu có thì lại là câu chuyện khác. Tiến sĩ Joseph Henrich của đại học British Columbia, Canada (UBC) có viết (
https://www.bccourts.ca/jdb-txt/SC/11/15/2011BCSC1588.htm#SCJTITLEBookMark124):
... Well, given everything you just said, we should be a polygynous society; why aren't we? And one of the ways I introduce that issue is I use clickers, so students can respond in real time to questions. And I put women only, right, so that only the women are going to click on this one. And I give them a choice: You're in love with two men. One is a billionaire, he already has one wife and he wants you to be his second wife. You'll be a billionairess; you will have your own island. Make it look pretty good. And then compare him - just a regular guy, identical in every way, but you will just be his first wife. And then the question to the women is what is the probability - I give them five choices - that you would be willing to go with the billionaire, and I was surprised that
70 percent of my female UBC undergraduates said they either would go with the billionaire, with a 75 percent or a hundred percent chance they'd marry the billionaire. And I said you're in love with both guys and they look the same and all that kind of stuff. So that makes me think that it's not as crazy as some people think....