Well Puppet and those who write the State of DevOps report (2023/2024 versions) see DevOps being subsumed as late stage maturity into Platform Engineering emergent maturation.
ITIL is service delivery, and self service delivery, and Platform Engineering is a fusion of DevOps mechanical tooling and processes, along with ITIL: ITIL is about service strategy, definition, transition planning and service operations.
I see Platform Engineering as a taking the DevOps user focus (the end users of the service) and layering ITIL over the DevOps processes/automations and self servicing.
Well from a past Service Delivery type. And DevOps student.