I would agree as others have said that the demographics for MN is a lot of high earners and statistically a lot from London too . I also agree that costs / locations are a factor too . Different salaries in different areas may be comparative ie if you live in area where accom is costly you may end up with a similar disposable income to someone earning less but living in a cheaper area .
There are so many variables about those that are able to earn well that they do so because they “work hard “. I have an issue with this if taken in isolation .
As there are many others who “work hard “, but never achieve the same salary level / comfortable lifestyle . I am not disagreeing that they do work hard and aren’t deserving of their success . But it is sometimes the implication , that they deserve everything they get and others don’t, because they don’t/ didn’t work as hard as them .
It is just that over simplification that I find annoying . There are so many variables about why one person has become “ successful “and it isn’t just down to luck .
I appreciate I will be over generalising , but race , poverty , traumatic life events , disability of the worker ( and other family members , sheer luck , connections , talent , intelligence , parents , aptitude , mental health , the parenting you received , your grown up home life - kids / partner etc are all in the mix and may play a part in those that can earn high and be successful .
There are of course those that can get through many obstacles in life and may be driven to do better than their eg their parents and to earn well .
If you have a good start in life , have a supportive parent (s) family you will already have a head start . You will have a financial and emotional cushion , you may be able to do internships , go to uni , have better connections from school , hobbies that may open doors for you .
I am not saying that connections will automatically get you a successful career as you will still have to do the job , have the required skills . One obvious example is nepo babies and a bit of a cliche , but Brooklyn Beckham got amazing opportunities but appears not to have had the talent / dedication to finish his course in photography and ultimately wasn’t a success in this career .
I would also flag up that those that have been in care / looked after outwith their birth family - don’t always have the financial / emotional / family cushion / buffer that others have . They may not have a fall back position e.g being able to move home with parents to save money after losing a job etc . They may not be able to pursue the ultimately higher earning career , as they can’t afford to make financial sacrifices now , may not have means / access to driving lessons / a car which may be necessary for certain jobs . Again this will also depend on location ad larger cities have better public transport networks .