The Wizard of Oz (Disney film)

Originally Walt Disney's follow-up to Snow White and the Seven Dwarfs, but the film rights were lost to Samuel Goldwyn, who originally intended to produce it as a standard musical comedy, with Eddie Cantor as his star.

Why It Was Cancelled

 * Disney's film rights were lost to Samuel Goldwyn, who originally intended to produce it as a standard musical comedy.
 * Samuel Goldwyn ended up selling the rights to Metro-Goldwyn-Mayer in 1937.