You can get vastly different analysis results depending on the assumptions you make about the marginal cost to run a vehicle - If someone is leasing a high end

You can get vastly different analysis results depending on the assumptions you make about the marginal cost to run a vehicle - If someone is leasing a high end SUV they wouldn't otherwise need the pay is far worse than if someone is driving around in a 5 year old car they already needed. It also makes a huge difference if they are doing this as a full time job or only during peak times. And all of these factors are in the driver's control, rather than Uber's.