Disney has good stuff sitting in its gigantic theatre's wings (that damned Disney Vault, really) They have so much to work with, and adapt (stuff which hasnt been touched in years, like Snow White and Sleeping Beauty would be good bets.)
Not to mention, they have already taken all of these fairytales/legends/myths and used them all for their movies already.
They know what will make them money, and if I were in the business for money, I would do what they are doing. Thankfully, their stories and budget are still making for good theatre.
"Don't worry, it should never be seen. It's comparable to Britney's hoo-ha." - being.jeremiah in response to the High School Musical 2 logo
"You look fantastic, all you need are high heels, cake and a dream." - Amneris