I understand what you're trying to say, but I think you're making a false equivalence between socio-economic disparity and innate talent.
Imagine the same person, cloned. Clone A is born into an economically challenged household; while clone B is born into an upper-middle class household.
Now consider whether both clones would achieve the same results at A level.
One could expect the child born into the poorer household to experience more challenges, and perhaps achieve worse results as a consequence.
In this instance, how would it be appropriate to call clone A thick or less intelligent than clone B?
When you are a talented child born into a bad family, your success is to go from £1 to £10M.
If you are a talented child born to a millionaire, your success is to go from £10M to £1bn.
If you are a dumb child born to a millionaire, you go from £10M to £1.
You probably assume that people with the same skills should have the same absolute outcomes. I don't. There shouldn't be glass ceilings for talented ones, so a son of a carpenter has a right to become a billionaire, or earn a Nobel Prize in science, or apply his talents in any field. But I don't think there exists any socioeconomic system that would deliver more equitable results and had more pros than cons, especially compared to the current system.
I don't say people are evil for not having much money.
I grew up in a family with very low income (my dad was earning about £12000 per year, when he retired a few years ago, my mum about £6000, I am from Central Europe, so things are a bit cheaper there, but not much). He worked shifts, and my mum worked 1.5 jobs.
Yet, I was able to achieve everything I wanted.
Maybe you should re-read what I write to understand it better.
Imagine the same person, cloned. Clone A is born into an economically challenged household; while clone B is born into an upper-middle class household.
Now consider whether both clones would achieve the same results at A level.
One could expect the child born into the poorer household to experience more challenges, and perhaps achieve worse results as a consequence.
In this instance, how would it be appropriate to call clone A thick or less intelligent than clone B?