At one point I worked at a company founded in 2005ish, so one of their core things was an ontology. We found that while some very generic things were reusable (

At one point I worked at a company founded in 2005ish, so one of their core things was an ontology. We found that while some very generic things were reusable (person and address, say) almost everything that drove business logic was different, use case to use case.