Earlier quoted context omitted.
I don't understand. According to Wikipedia, Disney bought the rights to Alice in Wonderland and the illustrations from the publisher in 1938, 13 years before the movie came out.
They also used public domain works like Snow White and Cinderella but now are working actively to stop other works from reaching public domain.
The public domain works like Snow White and Cinderella were hundreds of years old when Disney made their versions, and they have no issues with others making their own versions of these fairy tales (because there is only one "Disney's Snow White").
And Disney is perfectly fine with paying for the rights to IP to adapt into films, as with Alice in Wonderland, the MCU, etc.