I really enjoy equipment operating. Just wouldn't want to break in right now.
Crane operators make very good money. It can be incredibly boring.
I had my first fairly serious incident a couple months ago. I was operating an articulating boom all-terrain forklift (a Lull). I've got 30+ years experience on one, but I was amazed how quickly things happened which elevated it to a pretty big problem.
I was moving 280 gallon totes full of liquid at a chemical plant. Pretty basic operation, but there were several variables that made it not too good. Working on a bias, a bit tired, controls that were wired backwards (not unusual, but my instincts reacted opposite when I got into a crisis). Bottom line- I dropped a tote and damaged another, creating 2 leaking totes and spilling about 150 gallons of liquid. It's a mistake anyone could have made.
Unfortunately, the material was a hazardous waste, and I spilled it on dirt on a grade. It ended up contaminating over 200 cubic yard of soil, which all had to be excavated and removed as hazardous waste. The cost was really big (6 figures, closing on 7).
At the time I was an employee of the company, and the responsibility fell on them and their insurance company. If I had had to pay it, or it had hit my insurance policy, I'd be financially ruined.
I'm not saying this to scare anyone off. Like I said, I enjoy the work. But we live in litigious times, and there are a great deal of regulations (OSHA, EPA, etc) that can have tremendous impact. If you are gonna do it, do it right. It is no longer worth taking the risk or the potential liability.
Regarding GPS, road building, Rally training facilities, etc- That's what engineers and general contractors do. There is no special market for equipment operators who do these things, unless they are licensed and insured as GC's, engineers, etc.