85% of adults in America have a car. The 15% (plus children) who don't can use Greyhound/Megabus buses, which are fine. Flights are generally more convenient for trips over 300 miles anyway.
There is no significant use case for Amtrak. It doesn't take a conspiracy to make it unprofitable.
And also, Amtrak is a quasi-public corporation like USPS. Its existence is meant to be a public good, not to be profitable.
Maybe current funding dwarfs all those accumulated 1%s. I don't know. But maybe a dozen 1%s could help out a dozen other challenges and give a huge boost to passenger rail in the U.S.
It's easy to blame conservatives. But a huge portion of democrats take the same money and vote for the same bills, only they dig in their heels a little to score green points with trifling shit like rails to trails.