Also Microsoft lost all relevance in being a mobile phone platform under Ballmer. I can't think of a similar blunder from Cook, maybe losing mindshare from creative professionals, but that's a much smaller market that Apple could be making a comeback in.

At the same time Azure was started under Ballmer, which was important in Microsoft's reinvention and repositioning.

Now if only Cook could reinvent the autocorrect feature.

Haha, in this case it was Sundar Pichai's fault ;)

Fixed the typo.

Not just Ive, but Forstall too. That's gotta have taken guts.

He made some bad exec hires too (Mark Papermaster and John Browett) but he also fired them quickly.