Why it's so expensive to license the rights to a fictional character

Recently, two seemingly contradictory pieces of copyright law have popped up in the news. One is the case of Jonathan Coulton, whose arrangement of Sir Mix-a-Lot's "Baby Got Back" was lifted by the producers of Glee. Another is the recent case of a car customizer who was barred from making Batmobiles by a District… » 2/27/13 12:00pm 2/27/13 12:00pm