Cube-farm vs. open are not the extremes. My father had an office the size of a studio apartment with a door and a couch and a detergent bottle he peed in to avoid running into co-workers in the bathroom. I've seen an SF startup where people sit shoulder-to-shoulder on picnic benches, their only privacy, headphones and a single glass-walled conference room. That's extreme.

Cubicles aren't even the halfway point. Proper offices might be. Everyone working from home is the extreme.