"Non-Apple" products have always been the success story of Apple. Tim Cook is continuing that tradition. With those successes come failures, or dead ends, or reversals of direction. Remember Guy Kawasaki said that the most important thing he learned from Steve Jobs was that changing your mind is a sign of intelligence, that if you are doing something wrong, you should change it. The scale of Tim's Apple vs Steve's Apple changes the scale of those changes in direction.
The person who claims to have foreseen that black and green text on a screen Apple would make the iMac, or the iPod, or the watch or any of the services it does now is a liar.
Remember that Jobs relied on Cook for his organization, for his dedication, and for his ability to transform the praise and desire for Apple products into actual commercial success. He is not the same creative that Jobs was, but he brings his own strengths to the table.