Uber is mentioned because as one of the other commenters mentions licensing processes that existing cab companies use offer real benefit in terms of knowing abo

Uber is mentioned because as one of the other commenters mentions licensing processes that existing cab companies use offer real benefit in terms of knowing about your driver population, screening them and controlling them. The craiglist comparison is much more app than the the American Airlines one - a connection was made via this service with little oversight or regulation - that comes with benefits like higher availability and easier transactions, but it also can be risky.