[rimantas]

Take Microsoft: they are making most of the money off the same two products for decades—OS and Office. Now take apple: 47% of they revenue is from product which was introduced four years ago (iPhone). 21%(!) comes from product which was released merely a year ago—iPad.

Apple is not afraid to kill its cash cow if they think they have a better product in line—see how they dealt with iPod line before the iPhone—they were replacing the most popular model with something new.

I have no doubt Jobs has a vision many years into the future. It was amazing to watch his 1997 WWDC keynote and realize that now we see the fruits of his thoughts then.