What started out as basic agreement with your position in Post #1535, seems to have put me on the side of "privatize Amtrak" people.
My position was that few buyers would be rushing to step in and that those who might would primarily be interested in "for-profit" routes such as the NEC, Auto Train and perhaps one experiential long-distance train in the style of the Canadian or Rocky Mountaineer - maybe the Zephyr? On that premise those routes could be considered lucrative. However, if a prospective buyer was also forced to operate "essential" routes, such as the freight railroads were prior to Amtrak, their interest would wane even more.