Here’s a little from the Truman as Archetype page:
What is that truth? In part, it is about how the media and corporations have begun to surround us with a universe of illusions. From their high-tech control centers, they increasingly script and stage-manage events, creating the danger that we will find ourselves living inside seamless works of theater that we mistake for the world.
Like dozens of characters before him in other works of fiction, the hero in The Truman Show goes on a journey to escape this realm of smoke and mirrors. And then he discovers something unexpected — what he believed was an open horizon and a way out, is really a wall.