That is from the viewpoint of the top 10% earners if you look at the european market or small / local business than you are looking at people doing the job of multiple departments and getting blamed if something does not work or for their salary if everything works.
And the salary is most of the time lower than anyone from the HR or Marketing department whose job if you are unlucky you also have to do because the tools they use are too complicated for them.
And if take the freelancer / remote work market into consideration everyone wants to pass all the work to the lowest bidder and some of them get lucky with skilled workers whose salary may be in the median considering their location after substracting the share of the middleman.
And the salary is most of the time lower than anyone from the HR or Marketing department whose job if you are unlucky you also have to do because the tools they use are too complicated for them.
And if take the freelancer / remote work market into consideration everyone wants to pass all the work to the lowest bidder and some of them get lucky with skilled workers whose salary may be in the median considering their location after substracting the share of the middleman.