7-10 years, is my estimate for a large percentage of those products. Adapt or die.
How long did it take for touch screen technology to get where it is today? How much is a touch screen tablet? If you showed an average Joe an ipad or android tablet 10 years ago would they have been amazed? Not to mention the fact that one only costs a day or twos wages? Considering technological acceleration and the speed in which our knowledge base is exploding, the future is going to look..... very different than it does today.