Flat rate taxi fares, Hailo – reducing taxi costs?

I recently got a flat rate taxi fare from an airport in Europe – a bit of an adventure, the guy was really moving it. And the rate was of course cheaper than normal taxi fare which at airports are usually more expensive . So then I started to think about apps like Hailo (and the latest one Uber). Can these reduce taxi costs and in turn give us cheaper fares. Well I guess so. I don’t know for sure, but I would assume using Hailo is cheaper than “renting” a radio and a customer base from a taxi firm. If I’m right, will these reduced costs be passed on?