Uber pool gives it a very strong network effect. You need enough riders going in the same direction as you at the same time. When I do my morning commute, I can

Uber pool gives it a very strong network effect. You need enough riders going in the same direction as you at the same time. When I do my morning commute, I can't take Lyft because there isn't a critical mass and there isn't room for two ride sharing networks. Uber is consistently cheaper and has shorter wait times.