How do you quantify if your organization needs Enterprise Customer Success?

By definition, Enterprise Customer Success means that you are selling a product that becomes so fundamentally core to a large enterprise's own workflows, processes, policies, etc. that they spend a lot and have very high expectations for ROI. So if you need to quantify or justify with that quantification needing Enterprise CS, I would argue that the customer journey is complex and the customer needs a field guide. That journey is basically the path to value and all the ins and outs of what to do and how to measure doesn't just happen by itself or in a self-serve manner. If it did, it wouldn't be an enterprise-grade solution.