I've seen more than a few cabs in Seattle with "Use the APP" on the side. Every cab company has a different app. Uber did start the shift to using apps instead

I've seen more than a few cabs in Seattle with "Use the APP" on the side. Every cab company has a different app. Uber did start the shift to using apps instead of hailing or calling cabs. Now, the idea is in the "fragmentation stage" with the early adopters, where everyone and their brother has developed a different app. Once some of the underperfomers fade away, there will hopefully be more centralization when late adopter customers start using this market.