I'm sorry, this is such a stupid criticism and it gets thrown around here a lot.How about "Adventures in Disney Acquisitions?"
Snow White - 19th century German fairy tale
Cinderella - 17th century French folk tale, later published by the Brothers Grimm in 1812
The Lion King - Based on Hamlet by William Shakespeare
Peter Pan - First appeared in The Little White Bird in 1902
Dumbo - Based on a children's story written by Helen Aberson and introduced to Walt by his head of merchandise licensing (gasp!)
Beauty and the Beast - 18th century French fairytale
Disney feature films have always been based on "acquired" IP, the only difference is that many of the classics were public domain so there was no billion-dollar buyout of the rights to the content.