@yogthos The distance from Boston to Philadelphia is about the same as that from Amsterdam to Paris. Surprise! There’s a train there too (Acela), with nice seats etc.
The big problem the USA has is that it’s a large, empty country on a huge, empty continent. European countries are small, densely populated countries on a smallish peninsula off of Asia called Europe.
@brianonbarrington China is the world leader in high speed rail, not exactly a small country last I checked