Just curious, but are there stats on how the comparative income of some professions has changed due to changes like this? I feel like the change in the importan

Just curious, but are there stats on how the comparative income of some professions has changed due to changes like this? I feel like the change in the importance and work done by people in jobs impacted in this way (you mention railroad engineers specifically) hasn't substantially changed the amount such people are paid, but this is admittedly only a gut instinct.