The sources of competitive advantage are the attitudes, perceptions and behaviour of consumers. It has always been thus. So this talk of post-knowledge era is attractive and plausible but misleading. Instead of always trying to invent new paradigms it would be better to concentrate on the one enduring paradigm - people.
I was thinking that ERA is the wrong label. It smacks of something that has a beginning and an end and I don't believe that competing with information, labour, knowledge or anything else have beginnings and ends for all businesses.
I can believe that in some industries a point of exhaustion/saturation point could occur in regards to, for example, leveraging information for competitive advantage. But to stand up and say that the knowledge or information ERA is over is incorrect.