Jobs in eg In the city, finance and senior management often demand specialized skills, education, and experience that may be relatively scarce, fostering a competitive environment that drives higher salaries. In contrast, certain healthcare professions, although critical and demanding, may contend with a broader pool of qualified individuals, potentially affecting wage levels.
Which is essentially supply and demand.
I have a colleague from my investment banking days who earned seven and eight figure bonuses. It was based on a percentage of fees earned (for advisory services not lending before it starts another GFC debate). He saw a new business area, was brilliant at pitching and had the financial expertise to deliver what clients wanted.
Working in investment banking was an eye-opener because, as interesting as it is, the silly hours mean that people do it for the money and there's no pretence otherwise. If you don't get rewarded appropriately, you join a competitor and, if you're senior enough and play the non-competes carefully, you take your clients with you.
99% of fee earners were male and the first thing they told me was never say thank you for your bonuses as it make you look weak. In many way an unforgiving place to work but you realise that men are far less embarrassed about demanding higher salaries than we tend to be.