In 1980, the tracks were owned by Seaboard Coast Line/Lousiville and Nashville. Everyone seems to have owned the damn tracks except for Amtrak over the years. The only tracks Aamtrak owns are the ones the Metroliner/Acela operate on.
I still take the train since it is the only place to get "real food" when travelling as opposed to those beastly "bistro" boxes they pass off as food...BTW, I think it is the only way to go from NYC to Washington, since the time works out pretty much the same.(between the dealys, traffic and the miserable LGA and Regan National aiports)