The provider problem
Ceph RGW is an excellent object-storage foundation. It provides an S3-compatible endpoint and a proven storage engine. What it does not provide is everything required to offer a commercial storage service.
A provider needs customer onboarding, tenant-aware workflows, access-key lifecycle, temporary credentials, quotas, usage visibility, support paths, governance, and a trustworthy operational model. These are not storage problems. They are provider problems.