Tim Cook's record at Apple is not in dispute, and that is precisely the problem his successor inherits.
Over Cook's tenure the shares rose more than twentyfold, iPhone sales compounded into double-digit growth, and Apple became the most reliable money machine in the history of consumer technology.
When John Ternus takes the chief executive's chair in September, he takes charge of a company that has never been richer, and never looked less like it knows what comes next.
Best manager, not the best inventor
The fairest verdict on Cook is that he was an extraordinary steward for investors and a less certain guardian of Apple's future.
He turned Steve Jobs's inventions into an operational and financial masterpiece, but the era of Cook has produced refinement rather than reinvention, marginal year-on-year improvements to products conceived under his predecessor.
Apple today behaves less like a growth stock and more like a dividend-paying blue chip, dependable and cautious, a reflection of the temperament at the top.
That caution has been richly rewarded, but it has also left a question hanging over the company that no buyback can answer.
Is Apple still in the business of inventing the future, or merely of monetising the past?
Mind the AI gap
Nowhere is that question sharper than in artificial intelligence. Apple has spent comparatively little on AI infrastructure, a restraint that may prove shrewd as rivals sink fortunes into unproven returns, and could look like wisdom heading into 2027.
Yet the same thrift has left Apple visibly behind on the technology reshaping the industry, most painfully in Siri, whose limitations are a daily source of user frustration.
The danger is competitive as well as technical.
OpenAI has hired hundreds of former Apple staff and is reportedly building its own family of devices, prompting Apple to sue over alleged theft of trade secrets, the response of a company that senses a genuine threat.
To-do (today) list
Ternus arrives with a to-do list that is really one task: prove Apple can still surprise.
There are safe options, a foldable iPhone at perhaps $2,500 to spark an upgrade cycle among the wealthy, or entries into smart home hubs and doorbell cameras already colonised by Amazon and Google.
None of these reinvents anything.
The prize that matters is folding AI into the iPhone so completely that it becomes a genuinely new product rather than a faster version of the old one.
The iPhone will keep generating vast revenue for years regardless, so Ternus has the luxury of time and the burden of expectation.
Cook proved Apple could be run beautifully.
Ternus must now prove it can still be led somewhere, and that is a harder and more interesting test than any Cook was ever set.
