alt Hacker NewsThe US is also densely populated; when people are talking about high speed rail they are talking about connecting the major, close by metropolitan areas that most people live in.
The Midwest, as an example, has roughly the same size and population as France with a larger economy. In fact, if you overlay the French TGV network onto the Midwest with Chicago where Paris is, you get a pretty good approximation of where major Midwestern cities are located: https://www.reddit.com/r/MapPorn/s/NMr3J3gt8C
Even if it would serve the same population, I don’t think a system like this would have the same level of demand as France’s high speed rail.
Frankly, these don’t look like locations that that many people want to travel between.