In my opinion, in today's world most jobs (at least office jobs) are "movers". They take something from point A to point B.

Often you'll have a chain of movers A - Z. Each link can almost be it's own company depending on the industry. Naturally each thinks they're important, because someone has to move it around. Of course, you could go from A straight to Z and eliminate 25 companies.

Point is many, maybe most, companies don't actually produce direct value. They facilitate and they move. Now that's much harder to analyze.