Sounds like the service fee is charging drivers for Ubers research and development, possibly advertising, and other COGS, (cost of goods sold). Besides being brazen that is ridiculous and outrageous. Nobody subtracts COGS from their fare or price. That’s like a car dealership selling you a car for $50k and when you actually buy it they add on $15k for future development of new cars and spread of our services; it’s insane.