Skip the line passes are an obvious sucker play; they oversell tickets to the park so that people can go on like 1 ride every 4 hours, then charge again to actually be able to use the ticket you already bought (and simply don't deliver service to the others). Do you think they are unaware of the capacity at which reasonable latencies can be maintained?
In case you, or anyone else, actually care or are interested, there's a great deep dive video on the history of "FASTPASS" by the youtube channel Defunctland.
The Shapeland reveal made me jump out of my chair.