Perhaps most importantly, especially for producers of the screen and stage, an adapted work is more bankable; it represents considerably less risk to investors, and poses the possibilities of huge financial gains.
The film, considered the first detective movie, ran for only 30 seconds and was originally intended to be shown in hand-cranked Mutoscope machines.
[1] The first of many adaptations of the Brothers Grimm tale Snow White was released in 1902 while the earliest surviving copy is the 1916 version.
The director intended to film every aspect of the novel in great detail, resulting in a 9½-hour epic feature.
In the case of Hollywood films, judgments for the plaintiff can run into the millions of dollars, but these have typically been for outright theft of a screenplay idea rather than for fraudulent adaptations (see Buchwald v. Paramount).