This is very geography/climate dependent though. There are conditions where most people would not bike regardless of how high quality the bike network is.
Are these conditions that typically can't be found in the Netherlands?
I guess heavy snow isn't too common there, maybe if we plowed the bike paths? Ok, now I'm getting distracted imagining a bike-path-plow, it would presumably be mounted on a powered bike of some sort, or maybe on those little parking enforcement trikes.
Buy a coat and a pair of gloves. You're not made of sugar.
The effect is a lot less pronounced that you might expect. See, for example, this video talking about Oulu, Finland: https://www.youtube.com/watch?v=Uhx-26GfCBU