Because you only hear of the failures. Viaot the SAP homepage to get an idea of who is using it, all of those companies implemented it auccessfully at one point

Because you only hear of the failures. Viaot the SAP homepage to get an idea of who is using it, all of those companies implemented it auccessfully at one point. OP isn't saying the SAP implementation wasn't successful so, just expensive (no surprise), and somethings didn't work as begore (no surprise neither).