As a European it boggles my mind seeing how trains are basically non-existent in the USA (just look at Houston station), given how dominant the whole "Wild West" railroad rush is in everybody's immagination. Railroads are super ubiquitous here, and we've to work with a pretty hostile terrain - Italy has lots of mountains, hills, rivers, and yet has one of the best networks in the world. Most of the USA are basically…
The fact the US is basically empty means the cost to build a HSR route to go between population centers is super high because of the sheer distances involved. You’re talking like 1000 miles, not 200. The places which are closer together, like the East Coast, do have some passenger rail but they’re also much denser, like Europe, and so they have the same kind of constraints (or worse). The US has a lot of freight rail…
In Canada, half the population lives near a nearly straight line from Quebec City to Windsor; you could put a high speed rail line down the middle of that.