A friends dad who is a retired nuclear engineering professor said said as much, coal can't compete with natural gas on price. He said his former department and others were heavily dependent on grants from coal, oil, and the nuclear industry and those have all but disappeared. Quote: I got out at the right time.
Shale gas has been replacing coal: https://images.app.goo.gl/zb2bBfkBuAvWePVU6