Apartment buildings have very different surface to volume ratios. There are only so many square feet you want per window, assuming conventional layouts. Of cou

Apartment buildings have very different surface to volume ratios. There are only so many square feet you want per window, assuming conventional layouts. Of course there's always the "disused industrial floor loft" approach to living, but that requires exceptionally rich tenants and/or exceptionally low rent expectations. Chances are most office buildings have higher operational costs than the rent that could be collected that way. We'll see a lot of decay, building operators trying to make ends meet with ever cheaper office tenants, before informal factory floor type conversions happen. Wouldn't be surprised if, very much unlike those old factory floors, buildings are well beyond effective service life by then. (because architecture has become depressingly good at being on schedule in terms of design service life)