Hands up those who remember Larry Ellison of Oracle saying in about 2000 that companies should have their divisions and subsidiaries all running their ERP apps from a big centralised database (preferably both from Oracle).
It was a statement that only a command-and-control CEO could make. Several years down the line I can’t imagine anyone agreeing with that now.
Once they have been customised, ERP systems can be hard enough to change when the business changes, but can you imagine if you had to change not only the code but get some DBA in another company, or country, to agree to database changes.
Maybe that’s why Larry bought Hyperion – businesses really want to consolidate information from disparate groups, not centralise it.