i think the best way to describe it is to consider what an office in these types of buildings looks like.

consider a detective office in a movie from like the '50s. the office is small, primary illumination is from large, openable windows, maybe there's a front section for a secretary. that happens to be pretty more or less around the ideal size for an apartment as well, though for more bedrooms you probably need to merge adjacent offices.

now consider the office block from Office Space. it's extremely large and dark in the middle. it is so large that there is no way you could possibly get natural light into the middle easily. in Office Space that's kind of the point, the darkness and required artificial lighting makes it super depressing and a dystopian commentary on the modern economy. who would want to live in an interior like that?