Paul has been thinking about the announcement that ESRI would allow ArcSDE to use PostgreSQL and has up with a pretty good argument on why ESRI should make PostGIS the default spatial type.
One of the interesting nuggets to come out of the ESRI User Conference this year was the news that ESRI was going to support ArcSDE on PostgreSQL “sometime soon”. Which, to PostGIS people like ourselves suggests the question: “implemented how?”
If it was up to me, I’d tell ESRI to fly Paul out to Redlands and get ArcSDE running on PostgreSQL immediately. I’ve got a dying Oracle 8i installation that would love to be running PostgreSQL.