Congratulations! You've just summarily dismissed as criminal, immoral, and unimaginative each of the following Pulitzer Prize-winning works:
Jane Smiley's novel A Thousand Acres, a modernized AU (Alternate Universe) retelling of King Lear and winner of the 1992 Pulitzer Prize for Literature. King Lear is itself a hybrid of multiple folk and fairy tales
Rodgers & Hammerstein's Tony-Award-winning South Pacific, which was based on James Michener's Tales of the South Pacific and is the only musical to win the Pulitzer Prize that is based on another work that also won a Pulitzer.
Geraldine Brooks' March, a parallel retelling of Little Women and winner of the 2006 Pulitzer Prize for literature
(And so on and so on and so on...)