One of the many arguments that Brian Potter makes in this recent article called "Why Skyscrapers Became Glass Boxes" is that most people don't really care about the exterior of buildings. Hence one of the reasons why the market moved toward ever-greater architectural simplicity.
He quotes the late Chicago-based developer James Loewenberg:
“The person who looks to buy or rent a unit in a high-rise,” says Loewenberg, “only cares about three things: the location of the building, the layout of their unit, and the view from their unit. They don’t care as much about the physical appearance of the building and it is my contention that they never really look above the third floor…”
But I don't think this is exactly true. Also, Loewenberg was the founder of Magellan Development, which is responsible for developing two Studio Gang-designed towers: the Aqua Tower and the Vista Tower (now the St. Regis Chicago). Both of these buildings are designed for people who might look above the third floor.
For more on this topic, here and here are two related posts.
