Which, if I wasn’t being clear earlier on, I totally disagree.
What Tim Cook has done is build a formidable ecosystem or “moat” around the iPhone. This is what gives Apple products their incredible value, because they work so well with one another. This is what inures Apple to a lot of the competitive pressures in the market today (because any new product doesn’t just compete with any one Apple product; it competes with the entire integrated ecosystem).
This is what has allowed Apple to continue to be insanely profitable even as upgrade cycles lengthen. People don’t need to keep buying iPhones; they just need to keep using them, and Apple continues to earn in that form of higher prices, additional accessories, services and app sales.
It also puts in proper perspective Apple’s decision to offer so many different iPhone models to appeal to different pricing segments. It validates a lot of decisions not taken by Apple, from not acquiring Netflix to not offering cheaper iPhones for the sake of profitless market share.
Tim Cook has accomplished a lot more than simply “not ruining Steve Job’s legacy”. He has refined and expanded on it to the point where we now have more than a billion active iPhone users, and the beauty of it all is because only a small proportion of this user base is currently using other Apple accessories and services, this means there is still a ton of room for Apple to continue to grow and prosper.