[Iftheshoefits]

One does have a much better chance if one is born in a developed country--but it's still a small chance.

Also, a "pool of CS graduates from good universities" is already biased toward people who were born into (relative) privilege. Have you considered that you "haven't seen any evidence" because you are effectively excluding from your analysis a large quantity of the data?

Look, I'm not saying it's pointless for those who were born into poor or middle class (or even many upper-middle class) families without connections to try. I'm saying it's disingenuous to pretend that a system that self-selects against those very people is somehow a meritocracy or that it is not, in fact, self-selecting against people who aren't, essentially "born lucky."