[throwaway95729]

I think another reason for this, is that companies had a tendency to only have one single running database, to store everything, and often even in the same schema. Which ended up not scaling well in the organisation when so many unrelated topics/project/features went through one and the same database. I don't know if it has anything to do with licensing and paying per instance, maybe, but I feel that a lot of those problems of a database that doesn't scale, could have been solved by simply using a few databases for isolated domains instead of cramming everything into one.