I'm guessing the latter was not a screen adaptation of the Robert Louis Stevenson novel. But the buildings were torn down in 1984 for the sake of yet more office space. While Allegheny International was brought down during those dreary 1980s, the building went ahead. It later became the headquarters for Consolidated National Gas. The Moose building was more controversial.
Resentment still lingers for some.
But preservationists won some important concessions in exchange. They were later turned over to the Trust, which plans to re-inter the fragments in storage after the sculpture has been up for a few years. More importantly, preservationists won government guarantees not to destroy any other buildings between the Benedum and the convention center. Those buildings now form the backbone of the city's cultural district which means the ruins of the Moose Building helped provide the foundation not just for Brodsky's sculpture but everything around it. Imagine what it could accomplish if it were still standing.