A car inspector might think his job is safety related. Then the inspector who inspects the car inspector could start thinking the same. Then you arrive at a senior manager who is the boss of the inspector who inspects the car inspector.

    | senior manager who manages inspector who inspects car inspector
      | inspector who inspects car inspector
        | car inspector
          | pizza delivery guy

As the hierarchy expands people keep moving away from the real producer. And at some point have nothing to do with the producer.

Now you could say the senior manager might think his job is valid. Well guess what, if you get paid well, and paid well as you go up, doing as little job as nothing, you aren't exactly going to complain about it.