she's transposing a european solution to a continent sized country. there is like one hour of travel between each stations on this map. high speed train work in europe because a 4h train ride beats a 1 hour long airplane trip. you depart and arrive in the center of the target city. whereas with a plane, you need to go to the airport, wait, get stressed, molested by the tsa, etc x 2 because you arrive in another airport. train can't be competitive with airplane beyond this.
France