Honestly we need to build parallel rights of way anyways.
The freight rails are slow and dilapidated. It would make more sense for passenger railways to be separated from freight railways entirely rather than to try and squeeze into inadequate trackage. We don’t try to unload air freight through passenger terminals or vice versa.
That makes sense on some corridors but I'm not sure about the economics of building 2000 miles of dedicated right of way for a train that runs 3 times a week. Maybe if price, reliability, and speed of the service improved to such a degree it could feasibly compete with air and highway travel between those cities.
The good news is that most of the population lives in corridors that would make sense.
The I-5 coast and everything west of I-35 represents most of the US population. In particular, Chicago, Atlanta, and New York form a triangle roughly 700 miles on each side. This is roughly the distance between Beijing and Shanghai, or Tokyo to Fukuoka, both of which see high speed trains regularly making the full journey.
The government frankly doesn't have it in it to do a project like that anymore. Can you imagine the outcry when they have to eminent domain some poor peoples property?
>Can you imagine the outcry when they have to eminent domain some poor peoples property?
No, I can't, but I don't have to imagine the insurmountable resistance when the government merely suggests using eminent domain on a rich person's property.
Besides, poor people don't own property in the US anymore.
The freight rails are slow and dilapidated. It would make more sense for passenger railways to be separated from freight railways entirely rather than to try and squeeze into inadequate trackage. We don’t try to unload air freight through passenger terminals or vice versa.