“They’re not monsters, Lex. They’re just animals.” 

It amazes me how different this film is from its sequels, in that the sequels treat the dinosaurs as the villains. In this movie, it’s man’s greed that causes every downfall. Alan and Ellie only go to the park because of a promise of funding their research (set up perfectly by the previous scene in the amber mines.) The kids are only there as a marketing ploy to help convince Gennaro to give a good endorsement to the investors. Nedry’s greed is obvious. Dodgson’s cheap, not only with the meal, but even being a bad customer to the cabby (I love how visibly pissed the driver is at Dodgson when he steps out of the cab.) Even the repeated “spared no expense” line is a way to gaslight the shortcuts and problems, in order to still get an endorsement, as if having good ice cream can overcome the threat of violent death.