People driving cars in the Netherlands are almost always also cyclists, and often the other way around too provided that the subject is at least 18 years old. Almost everyone who is old enough is able and willing to use each kinds of modes they want. They might use the car to get to work but they might cycle to go to the store and pick up their Grade 1 kid from the elementary (primary) school, or they might normally drive once or twice a week to visit their grandparents, walk to take their kids to school and back, cycle to get the groceries, and take the train and walk to go to work and back. It should be a collection of all the different trips regardless of what they are normally and it should include those using the different kinds of modes for the different kinds of trips they could make.
This also defeats the arguments about cyclists being licensed and or taxed. People in school are taught how to cycle and assuming they pass the traffic exam, they get a certificate that they passed, a major rite to a Dutch child. Kind of like how I saw getting my learner license. You don't have to get one to succeed in life, but it feels great to know that you are capable. And most people when they turn 18 will get a driving license and learn to drive a car, even if they intend to go car free, just so that they can drive if they really need to, or if they need to drive abroad in the US. Most of the money spent on cycling is from local budgets, which are mostly funded through property taxes, and much of the rest is business license revenue, and most of us pay in some ways, business use some of the money they get from sales towards their taxes and people owning any sort of large property pay their property taxes and many people own property that is taxed in this way. No correlation to the amount they use roads at all.
You need to think about all trips, not just those made to get to home to work and back. In fact, I've seen figures that put the number of people who make a commuting trip at only around 25-33%. There are so many more trips. We build arterial roads and highways so that everyone* can get around at any time of the day (* everyone not including those without a license, those who cannot afford fuel, those without a car with the right to legally drive it and the ability to drive one safely) for whatever purpose of trip (aside from going to a store to rob it) they desire.
Why don't we build cycleways and streets to let you be able to make any type of trip you want to make at any time of the day for anyone and everyone to cycle?