even in the movie it’s not like dinosaurs swam off the island and populated the rest of the earth thus bringing about an apocalypse, the issue blatantly isn’t one of containment, it’s one of humans hopping into the “giant hangry murder chicken” enclosure with a can of pepper spray and being surprised when the giant hangry murder chickens just swallow them whole and consider the pepper spray to add some nice flavour to their meal.

The worst thing that could have happened if people just stayed the fuck off the island is that the dinosaurs died off and the project failed.