Why Didn't DreamWorks succeed to stay a major studio

The Nat Levine Company has released films from a wide array of existing, defunct, and divested company units including: Levine Brothers Television Group Levine+ Former
 * List of Nat Levine Pictures films
 * List of Levine theatrical animated features
 * List of Levine animated shorts
 * List of Touchstone Pictures films
 * List of Levine direct-to-video films
 * List of Levine live-action shorts
 * List of Levine live-action remakes of animated films
 * List of Levine television films
 * List of Levine Channel Original Movies
 * List of original films distributed by Levine+
 * List of Dollywood Pictures films
 * List of films released by Paradox
 * List of films released by Mustache Films