The good old American serpentine queue is highly democratic. Rich or poor, saint or sinner, it’s first come, first served. Or first to the urinal. Or whatever. But priority queuing lets people with more money pay for faster access — to amusement parks, public highways, and more.
Waiting in Line – Benjamen Walker’s Theory of Everything podcast.
Not mentioned in the podcast: My favorite, favorite, favorite priority queue: The TSA Pre program.