The time argument is always interesting to me. Chicago to LA for example “why take a 2 day train trip when you can be there in a few hours!”
Chicago to LA is going to take up a full day of your time if you choose to fly, unless you take an overnight. It’s not some magical teleportation service.
Likewise, rail travelers who don’t fly usually act like flying is this crazy hassle which it really isn’t. The TSA is what it is. Just like the grumpy Amtrak crews, you play the game and get where you are going.
The difference is, our country has invested heavily in passenger air infrustructure. It would be great if we had better and more frequent rail service to both compliment and compete with air service.
While not a magic teleportation device, the plane doesn’t also take a full day to plod across the country. Flight time westbound ORD to SFO is about 4.5 hours, but with a time change so an 8am flight has you into San Fran by 10:30am with a whole day left. Eastbound an 8am flight with a 4 hour flight time arrives by 2 pm, a half day left. There isn’t a market for long range train travel that can really ever compete against the airlines except for unique passengers who want to see scenery or don’t have a time schedule or have a phobia of flying, because they simply can never and will never compete on the basis of time, and no amount of HSR will change that. Again, I’m not saying trains have no place, they certainly do. With proper HSR trains can compete up to and including segments of 500 miles. The problem is as a country we are so spread out that the number of economically feasible HSR markets are few. Obviously San Fran- Los Angeles - San Diego would have been perfect, but geography and politics inflated a bill upwards of 50 billion dollars, an amount even liberal Californians couldn’t stomach. So what are candidates for true competitive HSR? Chicago to MSP, DTW, STL, and maybe even NYC come to mind. The cost and density of real estate on the north east might be prohibitive. Inter connectivity in Florida, Texas, the gulf cities certainly have less barriers. Over all though, while the thought of a massive HSR infrastructure is a grand idea, economics, geography, population sprawl, and much cheaper alternatives (airlines) make it likely a non starter.