You have a vc-funded company, operating at a loss, commoditizing the "talent" (drivers/musicians), thereby conditioning the audience (passengers/listeners) to expect an unsustainable cost for the service, using that loss leader mentality to drive other solutions out of business, until they argue or take action that the talent should expect even lower rates than they've historically gotten so the company can have a shot at being profitable. When the larger effect is that the company has captured value that used to go to the talent and then instead goes to the investors.
They're pissing all that money away on loosely related r&d and their hopes/dreams of an autonomous future. They now also need to somehow continue justifying their mind boggling 72 billion dollar valuation.
I expect in the coming years Uber will die and be replaced by a service that works exactly the same way but for a far smaller revenue take and without any of the lofty ambitions.