FOR MOST white-collar workers, it used to be very simple. Home was the place you left in order to go to work. The office was almost certainly the place you were heading to. Co-working spaces were for entrepreneurial people in T-shirts who wanted to hang out with other entrepreneurial people in T-shirts. You could stay at a hotel on a work trip but it was not a place to get actual work done, which is why a hotel’s “business centre”…