Why oracle recommends to define separate organizations for manufacturing and maintenance?

Summary: We need to understand why Oracle recommends creating separate org for manufacturing and maintenance

Content (required): We have only one inventory org which is the manufacturing plant and we need to implement Maintenance management for customer assets. We are implementing Fusion service, Field service, Service logistics, and Maintenance management cloud.

Version (include the version you are using, if applicable): 23B

Code Snippet (add any code snippets that support your topic, if applicable):