I think the answer was that most office workers would have struggled to work. Yes, we could have mapped home phones to office numbers, bought people cell phones and paid for their plans, subsidized a second phone line, etc. But it would have been hard and difficult; most people would have been nowhere near prepared. I suspect at the end of the day, we'd mostly have made do for a month or three, said screw it, and reopened offices even if we knew more people would probably get sick. Oh, and forget things like grocery delivery or streaming TV (Netflix DVD barely existed) for the most part.