It can't be cost. Primo office space is $30-$40/sqft/year. A 100 sqft personal office would cost $4000/year.
I recently interviewed quite a few places. Big fancy modern offices. Common spaces. Foosball tables. And all the devs shoved into a corner, working shoulder to shoulder, desks facing each other. Like slaves on a war galley.
I'm an extreme extrovert. Open offices suck. If you want me to be productive, give me some me space and me time for head's down uninterrupted concentration.
While I'm ranting...
"Agile" (whatever that is) and "collaborative" (ditto) are mutually exclusive. Cite: The Tyranny of Structurelessness essay.
I really want to know where these whackadoodle ideas come from. Then maybe we can do something to mitigate it.
I've assumed management self actualization blather is management's way of asserting their self-importance while screwing labor. Know your place you worthless keyboard monkey.
More charitably, a bestie just went back to school (after 20 years) to wrap up her masters degree. She said the cultural change was jarring. Kids these days all work in groups, collaboration, special snowflakes, etc. Because that's how the "real world" operates.
Is the "collaboration" fantasy an education meme which has infected know-nothing corporate management echelons?