The white-collar world has been forced by Covid-19 into a "work from home" experiment, and the results are in. It turns out we can be just as productive at home, if not more so, and many don’t want to go back to the office -- at least not full time. So what will happen to the office? Will we see workers coming in only when they have to? And if so, what does that mean to the multibillion- dollar commercial real estate industry?