As a Dutchie, I was amazed at the night trains in Sweden and Finland.
Especially Finland was crazy: 92 eur for two in a private sleeper to get from Helsinki to Lapland (with interrail) is nothing compared to a seat in the sleeper train from Amsterdam to Vienna (50+ eur p.p. for a six person dorm).
Although coming back it's weird that we whine about the Dutch railroads. Those are crazy reliable, I must never realised.
Sometimes these systems are autonomous, if something's off an alarm is raised.