But such violations result in sanctions against the medallion holder via a transparent process. For example (last time I was there, and I doubt that it has cha

But such violations result in sanctions against the medallion holder via a transparent process. For example (last time I was there, and I doubt that it has changed much), if you get in a cab at JFK, he had to take you anywhere in Manhattan / Queens / Brooklyn / Bronx, regardless of time of day, likelihood of a return fare, disabilities, etc. Otherwise, the medallion faced sanctions. A rideshare can simply decline.