It was botching Mobile that really did Balmer in and possibly not reacting quite quickly enough to the need for Enterprise-grade Cloud Computing while Amazon w

It was botching Mobile that really did Balmer in and possibly not reacting quite quickly enough to the need for Enterprise-grade Cloud Computing while Amazon was bootstrapping AWS right in Microsoft's back yard. They got the cloud situation under control but losing Mobile to Apple and Google was a disaster and they're paying for it still.