To add to this, I think it's more difficult for people who already have a hard time - people who are from underrepresented groups, people who are discriminated

To add to this, I think it's more difficult for people who already have a hard time - people who are from underrepresented groups, people who are discriminated against by making automatic assumptions about their skill level, people whose education is not a traditional diploma. These people especially are compelled to have some other sort of unquestionable badge of merit, and one of the Big Four on the resume helps. And yet it's doubly difficult for them because of where they start, and because they can afford less to ignore such a path.