Rails are great for freight transportation, not so much for Passenger transportation. The creation of Amtrak which has run huge deficits ever since has shown that passenger traffic isn't profitable whereas along with deregulation and the end of having to perform passenger service has allowed the Rail companies to merge, consolidate and prosper.
The airlines need to do the same thing that Rails were allowed to do in the 1970's and 1980's and that will require less gov't intrusion, not more because Reps and Sens will try to save there there terminals in there districts.
Actually, if Amtrak could pare down to just the northeast corridor, where it also owns the track, and a few other profitable routes, or if it was not responsible for the legacy pension costs of the private rail services it took over, it would be able to show a profit.
If I were in charge of Amtrak and didn't have to worry about the howls of the government or the railroad unions, I'd first shift legacy pension costs to the PBGC, then I'd eliminate the Sunset Limited and the Cardinal (which Amtrak discontinued, but Congress required it be restored) and other unprofitable routes.
Note also that some trains are kept running due to State subsides, such as the Ethan Allen Express and the Heartland Flyer, and as a business decision, as long as the individual states are willing to subsidize them, why not run them?