Commercial landlords are responding to tenant demand for more flexible office space. More companies are recognizing that a portion of their workforce do not want or need a dedicated office, much less all day every day. It appears that many offices are evolving into a place to come together in shared space for a defined time (e.g. meetings or strategy sessions), with less emphasis on "in office" time spent alone in a dedicated office.
I can see this gaining serious traction in professional services industries such as law and accounting. Firms that have the foresight to adopt this mindset will be well-positioned to attract and retain top talent seeking such arrangements. This is particularly true where the business can financially incent the workforce by sharing the cost savings from reduced overhead.