Unam, I am not surprised, because for an organization of your size, a decentralized PMO model rarely delivers full value.
Establishing a single, enterprise-level PMO that sets standards, governs methodology, and provides shared services, while still allowing limited flexibility for specialized areas like IT and training, is a far more effective approach. A centralized PMO improves project visibility, consistency, resource allocation, and prioritization by introducing unified reporting structures, standard tools, and clear governance across the organization.