What are the downsides of this?
The slow vesting shedule makes a lot of sense though.
The interview with Eric Ries is a bit clearer than the article, but it still misses a lot of details.
The central thesis is somewhere between "controversial" and "improbable".
To wit: current markets being too focussed on the short term does not align too well with Uber, a company bound to lose money for at least another three to five years under the best assumptions, being valued as it is.