It’s mostly due to the sheer amount of people who work in the building. The building holds over 10k employees. Problem is, everyone wants to park near their office space so they dont have to walk a mile or two to get to the other side of the building. So it gets cluttered very quickly around key lots.
Also, there’s no parking garages. It was a flat lot until a few yesra ago. Now its a flat lot with a second story.