Information flows are information flows whatever the medium.<p>Hierarchies are efficient, that is why they exist.<p>If we want to know what branch of a tree structure to find information we examine a node after gathering info on how that data structure is put together and work our way down.  If we want to know who is responsible for some aspect of an organization we ask the boss after gathering some basic info on how that organization is structured and work our way down.<p>As much as electronic signals have reduced friction, having a complete lack of hierarchy will quickly eliminate any efficiency advantage that provides as long as there is any communication friction whatsoever.