Which is a big part of the problem. But not all Netherlands cities are super dense, many have suburbs serviced by transit and with cycling paths. When they were built they considered transit and cycling access when they built them.
There is also the issue of land use. Many of those cities have looser zoning laws than the states which makes it easier for stores to open near peoples homes and scattered throughout the city rather than having to go to a massive commercial district with walmart and 5 other big box stores in a wasteland of parking.
No one is saying a tiny farming town of 500 people needs high speed rail but cities into the 100s of thousands of people can certainly support a transit network, and many did before their trams were ripped out and their right of way given to cars.