@nearlylovemyusername
Define 'high earner'?
My salary is well above the UK median and my household income over 2x the median. I'm fortunate to still be comfortable despite the rising cost of living. But I don't draw a six-figure salary.
Your attempt to imply that I wrote what I wrote out of envy or ignorance may say more about you than me.
I've moved a lot and lived among a lot of highly educated people. In my experience, those with the highest-spec brains have tended to go into science and often ended up working very challenging lab jobs with ridiculously low salaries and not a lot of status. Very few scientists become 'high earners'.
Those who went into banking tended to be of two kinds: either they were really good at maths, or they had slightly above-average intelligence, a strong sense of entitlement, and they cared about money. One professional mathematician I know who is also really good at understanding social processes (a very different thing) works for peanuts for a polling firm. One mathematician I've know who did very well in banking was brutally (and somewhat self-servingly) naive about politics and policy. Intelligence isn't all one thing.
Possibly the hardest-working and one of the smartest person(s) I know is a doctor in an African country; she has a middle-class lifestyle in terms of local purchasing power but would be poor in Europe. Another really smart person I knew, also a doctor, died in poverty because she was also a, wise and b, depressed, and worked 'only' as a locum. She said she was wary of the power patients ascribe to doctors, she didn't want to be the demigod in a white cloak.
Point being: to claim that there is a linear relationship between intelligence and income is, well, not very smart. But is IS a very convenient way for the haves to pretend they deserve their wealth, whatever may be going on with the have-nots, and that is why it posses me off. @Goota