Eh, the cost is that you only get a maximum of 80% of your salary. It is also capped.
1) 46 weeks with 100% pay
or
2) 56 weeks with 80% pay
This is capped at ~ $70 K, but in practice many employers pay people on leave their normal salary (or 80% if you choose the longer leave period).
The relevant question: do they consider paternity leave to be worth more than 100% of their salary? If not, this policy is harmful.
I spend money like a person living on the blue line. I earn money like a person living on the red line.
Or, to make another comparison, I imagine people in Sweden consume similarly to people in Maine or Montana (two of the poorer US states).
http://2.bp.blogspot.com/_otfwl2zc6Qc/S1C7-ttdD0I/AAAAAAAAMe...
(Note that those numbers are PPP adjusted.)