[criddell]

If you removed Siri, it would serious limit what you can do in CarPlay and you would also lose voice dictation. I think there would be materially fewer iPhones sold.

[microtherion]

Agree about CarPlay. Siri is also pretty much indispensable for HomePods, though that's probably a minor product for Apple, and it plays an important role in AirPods.

[pifm_guy]

Although if apple didn't have Siri, then they would likely allow other voice assistants on the platform, and you'd have 'dictation by alexa' instead.