The archives has to support business purposes and not just be nostalgic. One corporation has begin moving away from the Knowledge Sharing concept. They have gotten rid of their Chief Knowledge Officer. This corporation is emphasizing locally-focussed businesses. In this environment sharing becomes less important.
Internal competition works against sharing.
Also, the proprietary nature of information, especially in litigation, works against sharing. These sites receive very little use. Employees still call up the archives and ask for information. People don t want to take the time to search the Internet. The self-help tools are not yet in place.