Have them talk to the Swiss.
That sounds like a great idea for a mystery novel. Perhaps one that includes the world's greatest detective. It might even get adapted several times for movies, both on the big screen and made for TV.
I'm going to write it all down and make a mint!
It's immaterial though. They could instead face increased cost in taxes, decreased investment elsewhere, or good-old eminent domain for infrastructure expansion. The downstream effects of an infinite number of backup lines to guarantee service following an infinite number of track trespassers are not good for passenger satisfaction.
Regardless, my point is that the optimal amount of delay for profit and passenger satisfaction is not the same.
Ever since I’ve seen Japan’s trains drive perfectly as long as it’s not raining, on segments as short as 2 minutes apart, its become abundantly clear to me that delay is not an inherent property of any rail system.