Invalid claim that value networks supercede or trump value chains
P 47-49. The author references the well trodden term 'value chain' by saying "Business executives have long described the process of creating value as links in a value chain." this may be so but I believe the term 'value chain' is more commonly attributed to the pioneering work of Michael E. Porter (Competitive Advantage 1990, p59). Indeed it was referenced this way in ITIL version 2.The authors then compound this misdirection by stating that the value chain model is linear by nature (its nothing of the sort) and superseded by 'Value Networks'. It is not. Value Networks and Value Network Analysis (VNA) are very different and complimentary methods. If Porter is the reference point then the diagram on p49 is plainly incorrect.