Entertainment- Tons of movies are filmed in Hollywood, along with other major cities like Seattle, Denver, and San Francisco. Apple was started in the west as well, and now it dominates almost all forms of digital entertainment. Apple had dominated the world 10 years ago, with the first iphone, now 10 years later, the iPhone 10 is coming, and quickly changing the Entertainment game.
Entertainment 2- Video games. California has BlizzCon, GDC(Game Developers Conference), Vidcon, PAX east