Those team offices can hurt collaboration and innovation even more than open floor plans. In large companies, the random conversations between people from different teams is often the key to innovation and getting problems solved early. A team room means that to ask a co-worker on another team a simple question or to see what they are working on becomes a big deal because you are entering that other team's space and interrupting a dozen people - unless you really know the other person well, people just are hesitant to do it. In big companies, there usually isn't a problem with communicating within a team - the problems occur when teams aren't communicating with people in other teams.