"air traffic controllers were paid a median annual salary of $132,250 in 2022, or nearly four times the $33,380 median annual pay of crossing guards" It's not quite "expertise" that justifies the wage gap, it's supply and demand. Almost anyone can be a crossing guard--not everyone can be an air traffic controller. If AI theoretically could make anyone an air traffic controller, one would expect the salary to collapse…
Well, we can also say that we expect air traffic controllers generate at least their $132k/ year in value. Crossing guards seem to have a similar role and in theory could be generating the same value, but at the margin they're probably not - you'd expect hiring another one would be worth some significant fraction of the $132k to railway companies, but they're not competing to hire more of them. So if AI enables every…
This is an important distinction that the author misses. People are paid according to their value to the economy, not their value to society. So, even if the jobs were similar in expertise, the crossing guard would likely not make as much because the ATC provides more to the economy.
*FWIW, I'm not saying this is moral or fair, it's just is the way the economic cookie crumbles.