Missing an important slide- react to market trends.
Waiting 2 years to completely rework their mobile OS has put them where they are- in a blackhole.
Waiting 2 years to completely rework their tablet concept has left them in the dark in this market, as well.
Waiting years to push their search product has left them in the back seat.
I like Microsoft, have been a big MS fan for years, am MS certified and love a lot of their products, BUT they react and adopt too slowly, which is why they are failing.
These days, I'm moving more into Apple products and thoroughly enjoy the quality.