Nice try, but Uber et. al. are most certainly NOT examples of a "sharing economy". A sharing economy is distributed, and NOT under central control. Uber most certainly IS under central control, with the corporation controlling everything from rates charged to who can use it and when.
They are the anti-thesis of the "sharing economy". They took a black market model, slapped a sticker marked "sharing economy" on it, and journalists by the dozen who don't have a fucking clue what a REAL sharing economy looks like have fallen for it, and keep pushing it as if they knew what they were talking about. Which they most evidently do NOT.
To (miss)use IT terms: sharing economy is pure peer-to-peer. The Uber model is completely centrally switched.