People that want to stop drunk driving would disagree. Taxis are way to unreliable in the vast majority of US cities to be used as transport to/from a dinner with drinks.
I could not have cared less about the cost of Uber. I'd have paid ten times the cost of a cab, in order to have a service I could rely on. I've never once been stood-up by an Uber or Lyft driver. Reliability is what's important - little things like the car not being filthy and the driver not screaming at me about the Yom Kippur War are just extras.
Why don't taxi companies just clone (as closely as they can) the Uber dispatch and driver tracking technologies?