Not sure why you were down voted, added an up vote!
Absolutely true, Fujitsu servers have been for decades leaders in performance. So much so that other vendors (Cisco, HPE, and Siemens if I am not mistaken) actually OEM Fujitsu servers for their ultra high-end servers (SAP HANA and Oracle).
You are absolutely right, customers buy these designs for streamlining delivery (assembled in factory or distribution), managed lifecycle, validation and integration of firmwares and patches, and consolidated support.
Look buddy, most folks here operate SMB or commercial environments and are unaware of the challenges in a global enterprise account. Once faced with the challenge of having to manage 3,000 or more blades with 50,000 apps, many would start to appreciate having a streamlined service.