You do have a point here. What I wrote ("The novelty is increased utilization through sharing of what used to be exclusive.") is actually not the core innovatio

You do have a point here. What I wrote ("The novelty is increased utilization through sharing of what used to be exclusive.") is actually not the core innovation but its consequence for society. The core innovation of sharing economy is scaling up trust networks people traditionally relied on to mitigate risk involved in sharing transactions. Since the risk of this type of business is high, it used to be done only on a longer term basis, among friends and family and by people who really needed the money and so just had to put up with the risk. This meant that in the old economy sharing transactions were few and far between. Scaling up the trust networks means that they can now become commonplace.