There is evidence that the freight railroads that have implemented PSR or similar strategies see significant increases in their stock value, albeit for a relatively short period of time. What this means for the workforce and the railroad where it's being applied (i.e. nothing good) has been covered extensively.
The evidence that is availble shows that PSR actually reduces efficiency over time by making repairs and maintenance of trains more difficult, complicating train-building and scheduling, and placing more strain (on already antiquated and overused) tracks and structures. Even Progressive Railroading, which has a general hard-on for PSR, can't provide concrete examples of how PSR has improved service or overall efficiency for any C1 railroad.
Can anyone on this forum answer this question and back it up with evidence?