Intercity trains make more sense than just the East Coast Acela corridor.
Regular Amtrak trains don't count, they are too slow and too unreliable to count on - I'd take a train from LA to San Francisco if high speed rail existed and it it took less than 3 hours, comparable to flying. But not when it takes 11 hours on Amtrak (assuming it's on schedule, and you don't get delayed waiting on a freight train). Even a bus is faster than a train.
Regular Amtrak trains don't count, they are too slow and too unreliable to count on - I'd take a train from LA to San Francisco if high speed rail existed and it it took less than 3 hours, comparable to flying. But not when it takes 11 hours on Amtrak (assuming it's on schedule, and you don't get delayed waiting on a freight train). Even a bus is faster than a train.