I feel like this is not that terribly different than row homes in the city. They only have windows in the front and back and the back might just be a view of the building backing up on them from the other street. These houses already have a long skinny footprint and it works fine. It doesn't seem that hard to do the same with office buildings. Additionally, amenities like a gym, laundry, community room can all be placed in the center of each floor as desired.
But a row house has a front and back door. In an office building, the entry would be in the middle. You could divide each floor up into four apartments - two long apartments stretching the width of the building, say on the East and West ends. Then two smaller apartments with windows on only one side on the North and South ends of the building.
Four corner apartments work great if the floor plate is small enough to divide the floor by 4 and end up with a sensible square footage. Many office buildings are just so much bigger that this would lead to massive apartments that have few interior walls. Those are not so easy to sell. That's a reason the modern residential skyscraper is typically a narrow needle, instead of being shaped like Sears tower.
