Editor's note: This is Part 5 of a 5-part series that has been published over the course of this week. I’ve got nothing against Steve Ballmer but perhaps his time at Microsoft (NASDAQ:MSFT) has run its course. Ballmer has been at Microsoft since 1980 which is when he started as a business manager. From there he rose to become the company's president in 1998 and eventually its CEO in 2000. In that time he has built a legacy that would be envied by many corporate leaders. Although Microsoft would be hard-pressed to find someone with more passion for the company ...