My (limited) experience with this is that product owners will prefer to just let engineers figure out the best data model for what they're asking. This may come

My (limited) experience with this is that product owners will prefer to just let engineers figure out the best data model for what they're asking. This may come from either an awareness that they can't competently collaborate on this, an ignorance of that even being an option, or a desire to not be overly prescriptive of a particular solution.