Well Uber and Lyft fit well anywhere there is a shitty cab system. The entire reason I use them is because I don't want to call someone on the phone, get a cab 15 mins later (if lucky), have the cab take me on an inefficient route to boost the fare, and then claim the credit card reader is broken.

Most places in the US don't have a taxi system, they have scammers driving around in cars willing to gouge you for a ride.