Uber chief executive Dara Khosrowshahi said this week that the state's residents could see the costs of ride-sharing as much as double if voters reject its ballot measure. UC Berkeley professor and economist Michael Reich disputes those figures. He estimates much smaller price increases would be needed and could be absorbed by Uber and Lyft, and now he has hard data from the companies' operations in New York City that shows single-digit percentage price increases after drivers there received increased wages as mandated by law.