The 'Jurassic World' movies are a license to print money, but director Colin Trevorrow admits that the franchise should have ended after Steven Spielberg's 1993 original.

Speaking to Empire magazine, the director says that the franchise is "inherently unfranchisable" and that the franchise should have ended with Steven Spielberg's 1993 blockbuster.

Trevorrow said that "for the franchise to move forward, how can I allow them to tell stories in a world in which dinosaurs exist, as opposed to, here’s another reason why we’re going to an island?"

Trevorrow returned to the 'Jurassic' fold this year for the critically-drubbed 'Jurassic World Dominion', and the director said he felt the need to switch things up in the franchise.

"I specifically did something different than the other films in order to change the DNA of the franchise - the previous five films are plots about dinosaurs. This one is a story about characters in a world in which they coexist with dinosaurs."

The director admitted he was surprised to see the film marketed as the final entry in the franchise, as he maintains that the films hold strong appeal for film fans.

"A new dinosaur fan is born every day," he remarked.

"Kids deserve these movies, and young filmmakers grow up on these stories – much like 'Peter Pan' and 'The Wizard Of Oz' and worlds we’ve returned to constantly."

Trevorrow said that he created the film in such a way that it could produce enough narrative momentum to create more stories in the 'Jurassic' universe if necessary, pointing to the new characters created in 'Dominion'.

"This movie clearly takes a real interest in creating new characters that a new generation is going to latch on to — Kayla Watts [DeWanda Wise], and Mamoudou Athie’s character Ramsay Cole, who I think, in the Extended Edition, you really feel his purpose in a greater way,” the director said, before teasing "there’s more to come.”

'Jurassic World Dominion' will be available on DVD and Blu-Ray from October 3rd.