Educated people are the way they are due to a particular personality that they have. They are curious and self driven. Many educated people have no formal education. You cannot teach a personality.
That's not to say other personalities are less worthwhile... It's just that we have emphasized one kind of personality as the ultimate one and then are surprised that -- after maxing out opportunities for those already suited towards that personality -- a saturation point is reached and future effort has marginal gains.
What's wonderful about comprehensive universities is that there's a program that can excite the interest of almost every personality.
And even if that wasn't the case, education in general actually speaks to a variety of personalities: The self-motivated learner, the self-improver, the intellectual explorer, the goal-oriented achiever, the rules-based structure seeker.
That's not to say other personalities are less worthwhile... It's just that we have emphasized one kind of personality as the ultimate one and then are surprised that -- after maxing out opportunities for those already suited towards that personality -- a saturation point is reached and future effort has marginal gains.