I am not from a Nordic country but from what I've seen online, the norm in these countries is to split the bill, even on the first date. I have heard that men are socialized more like woman in these countries. Also heard that Nordic men do more household labor than men of other nationalities.
Additionally, the burden of reproduction is lower because it is more equally distributed on society due to the high tax rate. I feel in the US especially, a couple bears the majority of the cost of pregnancy, childbirth, childcare, and education. So perhaps the first date is split because people have already paid into a communal pot of money, some of which is used to support woman?
Maybe because I was born and raised in the US, I find it so hard to believe that Nordic men are doing emotional labor that comes anywhere close to how much the average woman does. But maybe I'm wrong? I would love to hear input from woman in these countries. Do men go 50/50 with you? Do you feel that FDS principles apply to your country?