Even in the states, it’s more a distortion caused by the big tech centres. A software engineer in Ohio doesn’t command that kind of salary, but in San Francisco or Seattle that’ll buy you a moderately-senior engineer.

And while academic salaries are generally not great, tenured professors at big universities tend to make a fair bit (plus a lot more vacation time and perks than is normal in the US)

Note that you are seeing an explicit tradeoff of different economic systems.

Not everywhere. Switzerland exists. Also cost of living is a thing so if anything US/CH just ramp up to match that. The rest of Europe has high CoL but terrible salaries. Asia has bad salaries but low CoL (on average).

So is the living cost. Insurance, housing, etc. A better comparison is PPP.

Yes the obvious play is to move human labor to cheaper countries like France (including CEO of course).