At one point I wore a hat in a IT leadership role for factories. We hated third party software because it created silo's where our data became un-usable. There is no point in an MRP/ERP factory system if all the bits aren't talking/working together. People fight and fight you as you try to get there, but once you get there and it all starts to work together and you no longer have jobs travelers looking like daisies with escalations all over they get it and their life gets significantly better.