So does the USA, where they make sense.

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.