Bike paths and roads are diligently cleared/salted in the Netherlands. So many people rely on bike paths to get to work or their train that I doubt ride sharing or taxis could handle the load.
The train is a big deal. Judging from comments I've read on web forums (granted, a pretty noisy and biased data source), most Dutch with longer commutes will combine cycling and public transit. In contrast, an American with a (say) 10 mile commute, must choose between cycling and driving. Those who do commute by bike in the US are dealing with more extreme weather and longer average distances, with little or no bike infrastructure.
