A better example would to have private offices with a shared space in the middle for working together. I think the truth is that office space is very expensive

A better example would to have private offices with a shared space in the middle for working together. I think the truth is that office space is very expensive in Sillicon valley startups. Thus to lower the operating costs shared space is used but it is not fully productive and has lots of distractions for workers. Google is probably a company that has actual productivity data about working in private work spaces vs shared work spaces.