The cubicles just branch off from a wall where they get their power and networking from. As long as one cubicle is close to another, all of them will have power and networking. All the parts of the cubicle are pretty light including the tabletops and cabinets so there wasn't much concern about injury and liability regarding handling those. Either way, furniture moving would be a concern with either move.
One way requires getting permits, bringing in tons of contractors, throws away a ton of old materials to be replaced with identical new materials, having insurance compared and validated, have new installations inspected and permitted by governments, and carries far more liability for the property management. One requires us to just unsnap some parts, carry over the light parts to another area, and snap it all together. Which seems like the obviously cheaper one?
Sure, I'll agree to some extent that upon an initial buildout the cost for individual offices versus high-end cubicle equipment may be a wash. However, the whole point of going with the cubicle equipment is that its then cheap to reconfigure. You don't need architects to draw plans to get certified by the city for how you snap together the cubicles. You do when you're making new offices.
Note: this is mostly about re-arranging in an already occupied space. Sure, if you're having to do a fresh build out where you're moving to things can definitely be up in the air. But I was just in an instance of re-arranging an existing space where we moved cubicles around and split offices with new walls/doors. Moving cubicles around was done in a couple of hours with $0 worth of new materials. Splitting the offices cost >$800/ea (not including employee productivity time towards managing this project) involving three different outside contractors, lease negotiations, permit requirements, and took a couple of weeks.