Tim Cook is clearly incredibly important to the success of Apple, but from a product perspective it is a refinement of all the products Steve Jobs launched that still carry the company. Those products are faster and slicker and have better cameras -- the innovations afforded to a hyper-profitable company -- but it isn't like Apple has done a 90 degree turn or anything. They aren't a smartphone/pad/computer company that turned into a smartcar/massage chair company.
Not really. You could say that the iPhone still carries the company, but with the exception of that outlier newer initiatives like Services and Wearables/Home/Accessories bring in way more money than products that Steve Jobs launched (Mac and iPad).
70% of Apple revenue comes from the iPhone, iPad, and Mac. Services revenue is entirely and absolutely based upon that, and certainly didn't originate post Jobs.
Even the Watch -- have one and love it -- exists on the back of the iPhone.
So, yeah, really.
Everything Apple has done that has been successful since Jobs is entirely in the halo of the iPhone, which of course still accounts for the vast bulk of Apple's profits.
Tech aficionados (myself included) might have qualms about their product strategy, but overall the business continues to be wildly successful with regular consumers.