It's also a chicken and egg problem. If nobody uses it there will also be no money or interest for improving it. It seems like a complex issue in the US.

However I feel that I must add that I'm from the country side in the Netherlands, and while there is public transport here, it is almost exclusively used by students, guest workers, and asylum seekers. So even though it is available, people still prefer the convenience of their own car. I also know people who are too lazy to cycle even just 10km, and they prefer to park right in front of the store. My point is just that even when it's there, and it's high quality and affordable, people still tend to avoid it purely for convenience or out of laziness.

In fact there used to be a train here over a hundred years ago, but it was removed. It seems a new one will be built soon as there is political will again from the greens.