On Friday, Nokia announced that they were adopting WP7 as their operating system. Although some open source advocates might see this as a set-back for Linux, Android is already the best-selling Linux OS of all times. Meanwhile, as a Ben Zander student, all I see is possibility and the the world of opportunities that this opens to developers. Although they will continue shipping Symbian for a while, they are effectively sun-setting it. Just like you can still purchase Itanium systems from HP, nobody really develops for those anymore. Nokia had this chart to offer on Friday: This is fascinating turn...