All the technology in the world won't coerce knowledge out of employees who want to hoard it. People will freely share their insights and know-how only when their environment encourages them to do so. Creating that environment is the leader's task. Ironically, the experience of business school and corporate life can work against knowledge sharing.
People quickly learn the paramount importance of sounding smart.
This encourages talk for the sake of talk and, even worse, criticism for the sake of criticism. Because smart talk is so deadly, it's critical to encourage people to air their real views. It builds trust. However, few will be comfortable sharing what they know if they don't trust the organization. But trust and comfort don't guarantee innovation and creativity.