The obvious answer to 1) is "you're not Google, Facebook or Amazon". How does he propose to distinguish between it "working" for them vs. them being able to fun

The obvious answer to 1) is "you're not Google, Facebook or Amazon". How does he propose to distinguish between it "working" for them vs. them being able to function despite the productivity hit because of their other strengths? Given that all the research shows almost entirely negative impacts of open plan offices on multiple dimensions it seems more likely that those exceptions succeed despite not because of the disadvantages. The OP links to the recent study that the supposed communication benefits of open plan offices also appear to be a myth which calls into question the premise of 2)