Europe also has a very temperate climate compared to much of the world. My area many years goes from -40 to over 100F (or 38 if you prefer c). Public and private enclosed transportation must accommodate 100% of the population, because for half the year commuting by bike is fundamentally unsafe" whether by frostbite or heat stroke.
I wish that was the case.
The reason people are not on their bikes is because the roads are scary and we don't have nearly enough dedicated bike infrastructure.
(By "we" I mean the entire world with just a handful of European exceptions.)