To be fair, their main concern isn't the "single vendor" (SAP) but the wide deployment of available (if pricey) consultants to maintain it. They're paying extra

To be fair, their main concern isn't the "single vendor" (SAP) but the wide deployment of available (if pricey) consultants to maintain it. They're paying extra but they're buying peace of mind. Not saying it's the right move, but still important to understand (without necessarily agreeing) what makes a market such as this (or any other) tick.