Movie-Nedry struck me as a certain kind of hacker trope (but whom I've also met in real life!) where part of their "compensation" is access to unusual and high end computer hardware. It's irrelevant whether it's the best tool for the job (and as the page notes, Nedry seems to use his fancy SGI system mostly to render 3D chess). But, at least in principle, it's relatively cheap payment to keep your programmers happy (though it didn't exactly work out in the movie).