You're attempting to compensate for an external inequity (some people are rich, some for reasons not pertaining to their own merit) by reducing the availability of a scarce resource in favor of mandating a free-for-all that will occasionally benefit a lucky lower income individual.

This is, unfortunately, one of the most inefficient and expensive ways to institute social reform. It is also being applied to a system for which there is also a far more regulated counterpart in the taxi system. Except, guess what? Dispatch says you won't be getting a cab for hours because they're already booked.