This is sheer assertion. What do you think is better? Uber - where you can see your driver's name and photo, know that he has a five star rating with 47/50 positive recommendations, and know that a third party is tracking your GPS location at all times...or the city government's antiquated taxi medallion service? Ditto for Airbnb.
> designed to protect people
Let's be real here, city government regulations "protect people" in the same way the TSA "protects people". Which is to say they don't and pretend that they do. You're responsible for protecting yourself. The police can't protect you from wandering into a bad neighborhood or even stop you from getting mugged; they can only clean up the mess after the fact. And no cab driver license will replace exercising your judgment before you enter a cab. Moreover, to be "kidnapped by a cabby" is a rare event. It's like soiling our pants over the threat from terrorists, which we've done quite a lot of over the last decade. Enough already.