The Netherlands is not comparable to Australia. ... Using them as an example makes no sense

I disagree. I've lived in countries with almost as low population density as Australia, and in the Netherlands of course, and the biggest incompatibility there is between lands is people's assumptions. You can absolutely transfer knowledge and best practices. Yes, lots of land can make "building out" cheaper in the initial stages. But if you notice that costs are rising and comfort goes down comparing to regions of the world that invested heavily in trains (or rarely, cycling infra), you know that cars are not the only option. Like, not throw cars out of the window. But add alternatives, removing pressure from fuel and car lanes. Yes, it works. Yes, it works outside of the Netherlands, too.

EDIT: by the way, I've visited Australia for a short while, too. I'm speaking from personal pain points and moments of positive amazement here.