Management accounting, controlling of business processes, optimizing the support by IT is the view to ensure profitability.
What is the concept of marketing for serving the customer is the concept of controlling for the assurance of profitability. - Do we have the same understanding of marketing and controlling?
In the end it means: Let the figures of the income statement tell you, where your business stands today and where your business needs improvements.
Your numbers don't talk to you? Let's make them readable.