There never any acknowlegement a person had the chance/grades/financial circumstances to go to uni, or get a recession proof job, everything is down to hard work. The grades achieved to go to university wouldn't be down to hard work then?
Not everyone should go to uni because about 50% of any given cohort isn't really bright enough to benefit., or aren't at the stage that university is really what they want.
If you have a recession proof job, then perhaps you have worked hard to get it? My dh will retire from such a job this year, having worked hard, in some fairly arduous conditions at times, for 34 years in his first career, which gave him the requisite skills to do the recession proof job for six years. The skill set required is very niche and you need x amount of experience in the first career in order to be able to do the second job.
The recession proof job has been bloody hard work, but for the salary level, it's expected. Getting the recession proof job was due to the mix of experience , skills and qualifications that dh has, and that not many of Joe Public would have. That said, anyone could have made the same choice to follow the same career as dh in the first instance, but they didn't. In 2017 there were only 190 people in the UK doing the job that dh did in his first career, and others would have fallen at the last hurdle of qualification, so the hard work put in during career one, directly led to the recession proof job post retirement form career one.
Convoluted TL:DR, but yes, in may cases it is due to hard work, in careers that others choose not to pursue.