The thing is: The knowledge is in understanding the business and business process. The ones who grasp that know Excel good enough to build a solution, which wor

The thing is: The knowledge is in understanding the business and business process. The ones who grasp that know Excel good enough to build a solution, which works for them (especially as they also know the builtin assumptions and limitations) Transferring that knowledge to a software department (and then limitations back) is quite complex and fails more often than not, leaving the business side with a software they don't want to use and can't adapt and quickly go back to Excel ("I understand it! I can adapt it!") and use the official tool only where required with hesitation. And yes, the Excel tool reaches a messy point, but it's built over years step by step, tied to the process changes.