You're right, but it's more complicated than that. You have to go back to 1967 when they built NOS and Pirates without enough extended queue for Pirates. Originally, it occupied the side of the building where the Indy queue is now down to the bottom where the Indy's entry queue now jogs to the left to enter the cave section. Even with all this space, it still had to be extended in front of NOS on peak days which choked off all traffic to NOS (pre-bridge). The shops and restaurants saw their sales plummet whenever this happened, hence the construction of the Pirate Bridge. Building the terraces for Fantasmic! didn't help. Add to this the addition of Country Bears and Splash, and the traffic only increased.