There was supposed to be an explanation for why the radios and communications were messed up that got cut out of the film too. Also, here's an article about the scrapped JP 4 script that was essentially going to be Dinosaurs For Hire: The Movie. https://www.theguardian.com/film/filmblog/2012/oct/12/jurassic-park-iv-half-human
I have unironically enjoyed every Jurassic Park movie to date, so I will most definitely see this one. One of my earliest movie memories was seeing Jurassic Park when I was 6 or 7 (and being traumatised by the dinosaurs eating people) and I love the franchise (despite the glaring shortcomings of pretty much everything after the original).