The Cook era, closed

Tim Cook's last day as chief executive was 31 August. He took over a company that made beautiful objects and sold them at a stunning margin. He leaves a company that still does that, and also bills a billion people every month for software, media, and a cut of everyone else's software. The Watch, the Services line, the China manufacturing system, the buybacks, the quiet that made Apple feel like a state — those are Cook. The late, rented AI — that is also Cook. History will try to split them. They are the same temperament: do not get caught owning the wrong factory.

1. 01Cook succeeded Steve Jobs in 2011. Ternus is the first CEO change since.
2. 02Under Cook, Services became a central profit engine. Hardware remaining the identity; software and media becoming the annuity.
3. 03Apple Intelligence was announced, delayed, and then rebuilt around Google Gemini and a remaining OpenAI handoff after the in-house Siri upgrade slipped.
4. 04Cook told investors on his last earnings call that Apple lacked a complete plan for the compute cost of the assistant people are about to be given.

Cook's gift was operations as strategy. He treated inventory, suppliers, and tax as design problems, and he was right for a decade. The same gift produced the AI posture: wait, rent, ship when the object is ready. That looks wise on the tape this summer. It will look either prophetic or evasive after Wednesday, depending on whether Siri works.

We assess that the Cook era will be remembered as the professionalisation of Apple, and that professionalisation includes a willingness to let another company own a layer. Jobs would not have done it. Jobs also would not have built Services. The argument about betrayal is a category error. The argument about dependence is not.

Ternus inherits the annuity and the dependence on the same morning.

• The market will give Ternus one event to look like a product CEO. That event is Wednesday.
• Services is the floor. Intelligence is the question. Hardware is the costume.
• Every operator who used Cook's Apple as a model of control needs to update the model. Control is now selective.

If you keep a file on Apple, close the Cook volume with three numbers: Services mix, installed base, and the Google cheque. Open the Ternus volume with one date: 9 September.

• Ternus's first event, and whether he sounds like engineering or like a chief.
• Any change in buyback or Services commentary in the first two earnings calls.

• Apple — CEO transition; earnings commentary
• Public record — 2011–2026 tenure