That's what Uber is working at. Seriously though - taxi prices and usability before the advent of taxi app were nowhere near the level that would allow me or my peers to regularly take a cab from home to work. Now it's trivial.
Indeed Uber's mission is more promising - not only taxi availability but also car pool, and push for AI driving. These are great solutions to reduce the need for individual cars in areas where public transit is not a viable solution.
