Any organization that designs a system (defined more broadly here than just information systems) will inevitably produce a design whose structure is a copy of the organization's communication structure.
To save you the trouble of wading through 45 paragraphs to find the thesis, I'll give an informal version of it to you now: Any organization that designs a system...
organizations which design systems (in the broad sense used here) are constrained to produce designs which are copies of the communication structures of these organizations.