It's an interesting question.
There are some that use maps to challenge what they're doing i.e. "Why are those racks custom-built?"
There are others who use maps to apply the right methods - whether project management or purchasing or finance.
Then, there are those who use maps to anticipate change for reasons of investment or managing inertia or both
Whilst others use maps to convey complicated spaces, either to focus on user needs or innovation or efficiency or even just to discover that one space that people are missing (i.e. virtual is a transport system)