Board Thread:Questions and Answers/@comment-25886819-20150902231248/@comment-27181220-20150902234130

Grimms is correct. Not only does Disney and Mattel slightly (or majorly) change the stories so they have a happy ending, but they cut off the real, true gore-y parts of the story. This mainly applies for Disney. For example, in the real story of Cinderella, the stepmother cuts off the toes and heels of the stepsisters.

And the following applies for both: another reason is because the Disney/Barbie modified tales are Disney and Mattel's original work, and it could possibly be copyrighted or trademarked, like Grimms said.