Rich says "That
kind of interoperability problem is much more a
problem of data variability and complexity, not a problem of the
“wrong”, but of there being TOO MUCH DEPTH of ontology
Are you referring to the classes, or the properties, or both?
IMHO the primary issue with ontologies such as you describe is
the sheer number of (class-specifiic) properties, not so much
the depth of the ontology -- users don't interact with depth
directly (or at all), they interact primarily with ontology
properties. When you have people replicating substantial
portions of an ontology's class structure as a property
structure, this is where IMHO the idiocy begins. Eliminate that
replication, and the ontology becomes more practical.