Depending on the amount of communication needed for being efficient. I work 10+ years in a Rendite First organisation and there are regular times where I think "damn, discussing this over the water cooler, while running into each other, would be more efficient" than a chat exchange or setting up a video/phone conf. Of course on the plus side I have the uninterrupted working hours, where nobody walks in to me and flexible hours to arrange my life and the tendency to not fully separate private and work which easily leads to free overtime ;)