Effectively, TfL haven't denied them based on the model, they've denied based on Uber being shit at delivering that model
(14,000 illegal journeys, flaws in the app registration process etc)
To meet the safety / regulatory requirements in London they must act like a proper taxi firm.
BUT doing that instantly opens them up to all the OTHER employee (and tax!) implications of doing so.
Because their profitability (current, in London's case, or future in global terms) is contingent on them not carrying the same burden of driver recruitment, policing and support (leave etc) as a 'regular' cab firm.
It is a the biggest point of regulatory risk, AND IT REPRESENTS A FIXED COST.
Driver costs DO NOT drop with economies of scale, which is the Silicon Valley model they've pitched to everyone.
They have no path to global profitably, or maintaining the 'we're just an app' model as long as there is a driver in the car.
I just can't finish writing it until I see more info on the judgement.
We don't write pieces based solely on press releases. It's not the @lonrec way!