Passenger Rail routes cover very, very little of this country.
They used to cover a lot more, but over the past 30 years, the network has shrunk to what you see on that map.
IIRC, Katrina wiped out a LOT of rail, and they chose not to replace it, leaving most states in the South without rail service.
My brother has recently become a FL/NY traveler with overnight accommodations. He had always driven, but now loves the train. His fare includes a dinner and (Continental) breakfast, with a private lounge at NYC’s Penn Station while he awaits his connecting train to upstate NY.