My two cents:
Since its inception, DevOps or ${SOMETHING}Ops strongly parallels:
https://en.wikipedia.org/wiki/Total_FootballSince its inception, DevOps or ${SOMETHING}Ops strongly parallels:
https://en.wikipedia.org/wiki/Total_FootballAs such I think OP has a point: are these co.s really trying to hire engineers with sufficient competency in multiple domains, and if so is it reasonable to get incrementally better compensation for each domain one has strong competency in?