Whatever your industry, you want to locate where your employee base is. For tech companies, that’s “Silicon Valley” in CA. Older established companies are based wherever they originally started, I suppose. Sony and Honda are Japanese companies, so they’re based in Japan with offices in major US cities. Hershey, well, they make chocolate, so they just needed cheap labor and lots of land for their factory (the theme park was originally just a private park for employees), so rural PA made sense for them back when. Banks, on the other hand, tend to congregate in VA because that state has the most lenient banking regulations.