I worked with a lot of people making close to 6 figures who only had a 2 year associates degree in controls traveling right along side of me. They made more than me with less education but more technical skill. It’s also a job market that is growing like crazy; automation.
Unfortunately most rails are owned by those moving freight and they have right of way on their rails over transit trains. Every auto factory has rails connecting it so it is feasible with a little change and many suppliers are near the factories so light rail and bus service could feed those locations.