But most people who make a living in theatre, film, and television are not so visible. They work behind the scenes in relative anonymity. I often tell students that if they find show business exciting, but feel that they don't have artistic talent, that for nearly every job category there is a theatrical equivalent. Every movie shot on location hires caterers who specialize in this area.
Entertainment lawyers negotiate contracts and package deals every day.
Studios have their own mechanical departments for maintenance, and specialty prop companies build and maintain machinery of all kinds from camera dollies to custom cars. Every set must have a medical professional of some sort in attendance. For those who are artistic, but not as a performer, there is what is called technical theatre in the stage world, and crafts in the world of film and television. These areas include both the art and technology of scenery, props, costumes, lighting, sound, and make up. The entertainment industry is huge.