Its complex, because even if something is unattainable by knowledge and experience that DOES NOT mean its equal opportunity.
Simply being born into a richer family means you're significantly more likely to earn a higher education. Simply being born into a white family means you're more likely to finish high school.
And this is leaving out connections. If you know the people hiring, you have a better chance of getting hired. High-status people know other high-status people. If your family is high-status you're at a HUGE advantage.
That doesn't mean the opportunity "manifested" for you. But, it does mean your likelihood of obtaining said opportunity went higher.
I mean, when you look at the proportion of CEO's who are white, tall men as opposed to the regular population you notice that. It's an open secret. Some say its coincidence. I don't think anyone really believes that.