Instruct: Classify Amazon reviews into positive or negative sentiment
Query: a real disappointment

I was left with the feeling that all of this has been said before in one form or another, Where it was ' new' there are other who have already explored the space ( eg The Suport Economy by Shoshana Zuboff) There are two many big words hidding little concepts. The case studies are simplistic and look to the past rather than casting light on the future. This will be another 'fad" and like all fads find its place in the dustbins of business books