It is simpler than all that. Elite parents send their children to elite schools and universities. Their children then learn how the world works and are equipped with the skills to engage with the people running things.
The lower classes do not value education in this fashion. Their children do not have parents at home who understand how the world works or how our society is organized. Even if those children are smart or gifted they have no idea how to learn the skills they need or how to properly use their gifted abilities.
It is simpler than all that. Elite parents send their children to elite schools and universities. Their children then learn how the world works and are equipped with the skills to engage with the people running things.
The lower classes do not value education in this fashion. Their children do not have parents at home who understand how the world works or how our society is organized. Even if those children are smart or gifted they have no idea how to learn the skills they need or how to properly use their gifted abilities.