The problem is that most courses teach what is wrong.
The customer is the most important part of the production line.
You must not run your Organization as a functional hierarchy. You must understand it as a System.
What we need to do is learn to work in the system, by which I mean that everybody, every team, every platform, every division, every component is there not for individual competitive profit or recognition, but for contribution to the system as a whole on a win-win basis.
To optimize the whole, we must sub-optimize the parts
There is no knowledge without theory.