Uber provides a superior version of the same service, getting more SF residents where they want to be, faster, cheaper. (Uber thus also better advances other civic goals like getting more private vehicles off the road, and eliminating wasteful parking.)

So why shouldn't Uber drivers have the same access to shared public infrastructure? We want roads maximally employed for the benefit of residents, not offered as a perk to narrow guilds.

Do you have zero self-awareness about how frivolously bureaucratic and obsequious your focus on "medallions" and "getting regulated" sounds? What's wrong with judging outputs, rather than politically-assigned credentials?