Yeah, all we have here in the U.S. is Amtrak and freight trains, and it's gotten a lot harder to find open box cars these days (not kidding).
Amtrak is a nightmare. Even just trying to use their website can be torture.
I've ridden the train from the west coast to Chicago several times and I'm willing to put up with going two and a half days without a shower or a decent nights sleep, the rude conductors, the ridiculously expensive food, the missed connections, etc. all for typically at least twice the price of a plane ticket.
But on top of all that they're going to make me beg them to let me buy a ticket?
Nah, not when I can go over to Expedia or One travel, hit three buttons, and start packing.