Legacy systems are often the enemy of progress. Perhaps you have a generic older ERP system or even a homegrown one. It has served you well, but it may depend on the tribal knowledge of the system originators who may or may not still be with the company.
Although steel service centers have been late adopters in the past, that is quickly changing. The reluctance to upgrade software is usually more about the time it will take and the disruption it will cause. While it is true that it takes time to implement successfully and it does require organizational change, the long-term benefits far outweigh the short-term inconveniences.