No... Uber is not more efficient than a taxi service. They were at one point but now they aren't. Taxi businesses have similar apps, drivers who know the area, and regular hours. If it were more efficient, than they wouldn't have needed all that SV money, they still need SV money while cutting worker wages, commanding a ton of the market, and externalizing most of their costs. There is no way Uber exists without someone dumping money in to keep them artificially in business.