If the AI is tasked with "Build a building as cheap as possible with as much floor area as is legally permissible", then it too will make dull buildings.
What you really need is more people willing to pay a premium to live/work in a unique or famous building like the empire state building, and then more such buildings will be built.
What you really need is more people willing to pay a premium to live/work in a unique or famous building like the empire state building, and then more such buildings will be built.