'But when you start to dig deeper and ask why organizations have lacked the discipline to use SharePoint [and other Content Management Systems (CMS')] effectively, you quickly realize that the problems with SharePoint I’ve sketched here are only the tip of the iceberg. They’re merely symptomatic of a larger, far more troubling problem at these organizations: weak or nonexistent information governance at the enterprise level.'
Source: The SharePoint Information Governance Problem – via CMS Wire from the awesome mind of Joe Shepley
This is one of my personal peeves being a student of information management/theory you see this a lot. Everyone within an organisation will scope what their particular tool or area does, but no one communicates or coordinates it across the whole organisation.
Generally if any attempt is made to coordinate information governance it is through the creation of a policy by a committee which then puts out one announcement saying what goes where. A few people notice it and do it once then it becomes forgotten as having multiple sources of information is only a problem later on after publication.