Ballmer would be the next one. Like we all know, he is not that beloved personality. I guess it would be tough for him to enlarge the already roman like empire. But then, when you have windows and office and revenues all flowing from past deals; they just have to do what they are doing.
I am also not big Microsoft fan but we have to admire what Bill Gates have done.
Steve Job summarized his legacy as "The first person to open a software company when no one knew what was a software". He truly deserves some applauds and accolades.