of all the jerks i see causing traffic delays, 90% of them are lyft/uber drivers. next time your in SF and you see someone blocking the bus-lane with their hazards on as if its some excuse, you'll see the uber/lyft tag.
Cities need to designate pick-up/drop-off spots away from heavily-trafficked streets for these pseudo-taxi services, UX be damned.
Maybe some form of limited-supply, transferrable crypto-token[1][2]... Could be used to prevent these sorts of situations.
[1] I am, of course referring to medallions.
[2] I am, of course, fishing for karma, by introducing a blockchain when one is not necessary.