I worked for EDS from late 90s to early 00s and SAP was _everywhere_. Projects were scoped and framed as "how can we fit this into SAP?" - and not "how can SAP help this project?"

SAP is/was virulent in nature. If you used it for one thing it damn near forced you to use it for everything. A significant chunk of the work EDS were undertaking (as IT outsource) was migrating to SAP.

Our timesheets, project plans, data, hell even a huge chunk of our app development was done in SAP. We were paying through the nose for SAP contractors too.