Personalization is my guess for the next big driver.
Today you can walk into the Harvard Bookstore and print out any one of five million books instantaneously. It won't be long before we can walk into REI and get a body-scan then a custom-made rain jacket instantaneously - or - go to a health-food store where they do a blood test and concoct a custom vitamin pill -or- go to the doctor where they inject personalized nanobots designed to reproduce then rebuild cartilage or remove plaque buildup -or- go to the
In a sense, this is a continuation of what we are already seeing. From a marketing perspective, the beauty of personalization is that people change. When they have something custom-made they feel the need for a new suit when it no longer fits perfectly or a new vitamin when they no longer have the underlying condition that caused them to get the old one. Fewer customers with more wealth demand that companies create new ways to entice obsolescence.