They don't want it because they haven't experienced it. The Dutch used to be super car-dependent, and now they're known world-wide for good infrastructure, and it improves every year.

The problem is we keep getting half-measures, like a few lanes here and there, and maybe a cycle path for recreation that doesn't go anywhere interesting. We need a big investment into infrastructure to show people what they're missing. But when all you have is a hammer (car), everything looks like a nail (more lanes).

My area is super car-dependent, but people love our train infrastructure and want more. But we only want that because we were essentially forced to build it to host the Olympics (I'm near SLC). Before that, we paved over a lot of our tracks because cars were getting popular, and that was before we had any traffic issues. Now that everyone needs a car to get everywhere, traffic sucks.