Perhaps I would add also these distributions are high dimensional. Although being slightly above average is not difficult (unlikely to get paid doing it), if you can find a handful of non correlated features at which you are above average, you can be easily be the top few percent in your sub field (ie likely to be paid handsomely for your expertise)
I’m pretty sure you can be paid handsomely for being an above average accountant or plumber in a decent location (and mid sized or bigger city in the developed world for example)! Being above average at playing the guitar, not so much.
