Just the costs of the decor and other accommodations would probably outweigh the costs of having internal walls and maybe a tab bit more floor space (even tho I have a strong suspicion that traditional offices are actually more space friendly).
Cubicles and small team offices do not take much more space, in fact they can often be more space friendly since there isn't that much open space needed in order for the office not to feel like a sweatshop and you also save a lot of space on quiet rooms and meeting rooms.
duct work for ventilating multiple smaller offices properly is problematic vs just having one big open space. I'm not sure what fire codes may have to say about it either. ventilation was one issue that was brought up to me years ago when asked for input on a new office revamp. Somehow the owners and exec team still all managed to get new private offices with ventilation, but the dev team didn't...
I'm almost certain that it's legal in US to have people work in a windowless room, but I doubt that most people would accept it. So you're also restricted in how "deep" your building can be, if you discard the open office plan. Meaning that you'd have to build higher, or have more buildings.
our coworking space is almost all windowless - I don't mind, others don't mind (or are still members, despite it). But we've still got ventilation in each room - it would get unbearable quickly without decent HVAC.
Just the costs of the decor and other accommodations would probably outweigh the costs of having internal walls and maybe a tab bit more floor space (even tho I have a strong suspicion that traditional offices are actually more space friendly).
Cubicles and small team offices do not take much more space, in fact they can often be more space friendly since there isn't that much open space needed in order for the office not to feel like a sweatshop and you also save a lot of space on quiet rooms and meeting rooms.