You could have done what I did, and be earning what I do, but you chose not to.
It's not quite that simple is it.
I said previously on this thread that I went to university 3 times and did a PhD recently to qualify in my field. Most of that study took place as a single parent, but with a lot of support around me from family. I now earn 50k in my 30s. Ok, it's not 80k or 120k.... but it's above average, right? It's a a "good" salary. Do I believe anyone could have done what I did and followed my path into my particular career? I actually don't, no.
I came from a background of poverty and a one parent family, but I had a parent who pushed me to do well. Who hammered home the value of education from a young age. Who encouraged and praised my school based achievements. Who loved me and didn't abuse or neglect me. I am able bodied; I have my health. I am relatively intelligent. When I needed childcare for my DD so I could meet university deadlines, it was there. I had a lot on my side from the start.
Others aren't so fortunate. That's why I don't believe "anyone" could have followed my education and career pathway. Because I recognise that my childhood and what it offered provided the necessary foundations for me to do it. If I'd been abused, not encouraged to do well, if I'd had a lower IQ, if I'd had no childcare for my DD while I studied... do I think I could have achieved all that I have? No, I don't.
I don't look down my nose at people who have a lower educational attainment or who earn less than I do. I have the humility to realise that, whilst I worked fucking hard to get where I am in life, many people who earn less have worked just as hard as I have, but possibly without the resources and opportunities I had at each stage of my life.
So, my relatively good salary doesn't make me a better or harder working person than a lower earner. It makes me in many ways luckier.