I think of them more as 'information fiefdoms', sounds more oppressive.
I find it rather odd that so many people seem to be that insecure about their jobs (or themselves) that they feel that the only way to function and 'get ahead' is to etch out their own fiefdoms and road block, or at the very least thoroughly red tape, the flow of information to and from their zones of responsibility. To use a metaphor, that type of mentality creates a brontosaurus as it would be designed by a committee composed of lawyers and NASA engineers, big, slow, expensive and complex.
Which is why the idea of linking 'information fiefdoms' appeals to me, databases don't throw red tape at you just because of office politics. Let IT, HR, and Finance use the systems they need to do their job, but link those to a FM system which automatically updates a CAFM system (along with the appropriate CAD files) when they update, and which updates their systems when the CAFM system is updated.
*gets off soap box and slides it back under desk*