Very few of the meetings are about “deciding things”, rather they are about aligning views. As a manager I see my role as setting up meetings so that the most qualified peoples views properly influences the right stake holders. When everyone aligns on what problem to solve and how to solve it there are generally no need to take any decisions, since work gets efficiently done and few issues pops up that are not automatically solved by way of previously achieved alignment.
While using this strategy, what generally drives more meetings are: 1) Managers and other power holders that cares more about their importance and status than the work. 2) The parts of the staff that are dissatisfied and don’t like their work. In many of these cases, they have been obviously neglected/abused by management before and don’t feel trust in the organization.