Balaji Srinivasan on taking the L to set up for the W: "Before Satya Nadella took over Microsoft, it was losing on mobile to iOS and Android." "He took the L... and he said, 'You know what? Linux is there. Linux is not going to go away.'" "We're going to run Linux on Microsoft hardware." "Mobile is not going away and nobody's installing the Microsoft mobile OS." "So we're going to allow Word and PowerPoint and Excel to run on iOS and Android devices." "And... the browser isn't going away.…