When I did consult and visited a lot of workplaces (>95% open plan) in the IT sector, the typical 'collocated teams' reality was something like 2 to 3 socialites with apparently non too busy schedules behaving like the place was basically a bar without alcohol, free banter, jokes and non-work related conversations filled the room. Then 10 others wearing heavy headphones, always the one guy wearing explicit building site type noise protectors, and a preppy semi tech function junior type oblivious to the subliminal messages tapping people on the shoulders to get some basic info that is on the first page of the intranet or easily to google in 10 seconds. Did I already mention the 2 people that were just sitting there all day staring, waiting for the others to go home to finally find the peace to get some work done?