How small are we talking? My parents live in a town of ~2-3k, you aren't getting a taxi from there without arranging in advice, app or not.
Or my hometown of ~60k, I can't say availability of app based taxis is better or worse than availability at a taxi rank, though obviously there is the benefit of not having to get to a taxi rank.
The city I live in now of 1 million, app based taxis are a clear win, mainly because most taxi ranks fit ~5-6 taxis max and so at busy times there would be a queue simply because of that fact. That said, you're going to be waiting as long for a pickup at closing time via an app as for someone to show up a rank.
(Extending to app based services in general as actual Uber is a niche player in my country, basically only used by tourists so hard to get rides that aren't going to or from the airport or a couple of tourist hot spots)
Or my hometown of ~60k, I can't say availability of app based taxis is better or worse than availability at a taxi rank, though obviously there is the benefit of not having to get to a taxi rank.
The city I live in now of 1 million, app based taxis are a clear win, mainly because most taxi ranks fit ~5-6 taxis max and so at busy times there would be a queue simply because of that fact. That said, you're going to be waiting as long for a pickup at closing time via an app as for someone to show up a rank.
(Extending to app based services in general as actual Uber is a niche player in my country, basically only used by tourists so hard to get rides that aren't going to or from the airport or a couple of tourist hot spots)