Sure, but business isn't just doing what your doing now to make money. It's making sure you can continue to make money in the future. For that you need to have

Sure, but business isn't just doing what your doing now to make money. It's making sure you can continue to make money in the future. For that you need to have excess capacity to be able to transfer non-productive people in to productive roles without an extended lead time. People, departments, assets, etc all fluctuate in their levels of usefulness and productivity with ebb and flows of a business.