We've just moved into our first place where everyone has a private office. It's absolutely amazing! I had been complaining for years about open-plan offices [1], but I was actually surprised at just how much more productive it is to have a door that closes! [1] http://blog.circleci.com/silence-is-for-the-weak/
I've personally had the opposite experience. I'm far more productive in a team environment. In video games my most product times are when an artist and/or designer and I sit together and work together. Even when we are not directly interacting with each other seeing stuff on each other's screens lets us see what each other is working on and communicate early and often. I understand that some people in certain roles w…
As others have mentioned this is where the definition of open breaks down. Team environments are great. Many open office advocates are small companies who, because of their size, are really advocating team environments.
Now grow that same company to 100s of people and see if the open office still works. What I have seen is that even the biggest open office advocates start putting up walls (even if movable) and segmenting once again into a teams.
TLDR; Team != Open