Post#2 » by mhd » Sat Jun 2, 2018 9:06 pm
The only profitable train routes in the US are in the northeast corridor.
The problem is that Amtrak doesn't own the lines and always has to give the right of way to commercial trains (used for shipping).
You would need a dedicated rail line to connect DC-Philly-NY-Boston. Even then, the cost to secure the land would be prohibitively expensive.