Steven Spielberg has launched several franchises throughout his career, and he's hung around to direct some of the sequels, perhaps sometimes ill-advisedly. I think the first two sequels to "Raiders of the Lost Ark," "Indiana Jones and the Temple of Doom" and "Indiana Jones and the Last Crusade," are terrific, while the sluggish "Indiana Jones and the Kingdom of the Crystal Skull" was one archaeological adventure too many. Passing the reins to James Mangold for the, hopefully, series-closing "Indiana Jones and the Dial of Destiny" was a wise move.

Spielberg was also wise to exit the "Jurassic Park" franchise after one sequel , and he clearly did the right thing by passing on "Jaws 2." Arguably, the most brilliant thing he's done in terms of IP management is his continued refusal to make

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