When did magic become elitist?

It used to be that anybody could learn magic, in pop culture as well as folklore. But in recent decades, magical powers have become an inherited trait, which only a few people are born with. What changed? David Liss, author of The Twelfth Enchantment, explores the trend towards elitism in our fantasy stories. » 8/15/11 1:30pm 8/15/11 1:30pm