For about a century, coal has been the cheapest, most reliable fuel for utility-scale power generation. For most of the eastern seaboard, coal has only been supplanted by natural gas (slowly) over the last ten years. Competing fuel price fluctuations dictated the change. Natural gas prices before fracking were both higher and much more volatile. There have been periods of ebb and flow that many workers and their families have managed to "wait out" in the past.

Further, if you've lived your entire life in a coal town, the sheer scale of the plants, mines, railroads, and other infrastructure can make them seem permanent, reliable. It is very difficult to imagine so much specialized infrastructure simply ... going away.

Imagine if you had spent your entire life as a datacenter tech, as had your father. You knew the business inside and out, understood the network of suppliers, the customers, the hardware, everything. You've gotten into arguments about different rack configurations and which you prefer to work on. This is your career. You got into this business because it would provide a stable life for you and your family, and you were damn good at it. Then people started telling you that we would no longer need datacenters - at all - in 5 years because there were now cheaper, better alternatives. You wouldn't believe them.