The park didn't fail because of Nedry

It failed because of the storm.

Nedry in the movie and the book had everything planned out perfectly. It would've only taken fifteen to twenty minutes to steal the embryos and transport them to BioSyn's contact at the dock. When he was finished, he would've returned to the control room and set everything straight again to avoid looking suspicious. His plan was to sabotage InGen, not destroy the park.

The only thing that messed the whole plan up was the tropical storm that hit. That's what caused Nedry to get lost in the jungle and killed by the Dilophosaurus. And he was the only one who could unscramble the computers and get the park back online.

So in a sense, the storm was part of life finding a way. God putting nature back in order. It wasn't human action that kept the park from being successful.