My head canon is that the thing that preemptively pops the bubble is Apple coming out and saying, very publicly, that AI is a dead end, and they are dropping it completely (no more half assed implicit promises).
And not just that, they come out with an iPhone that has _no_ camera as an attempt to really distance themselves from all the negative press tech (software and internet in particular) has at the moment.
Keyboards were replaced with a touch screen alternative that effectively does the same job though. What is the alternative to a camera? Cameras are way too useful on a mobile device for anyone to even consider dropping them IMO.
That would require people that know about AI to actually choose to cancel it - which nobody that actually knows what AI can do, would ever actually do.
The Apple engineers, with their top level unfettered access to the best Apple AI - they'll convince shareholders to fund it forever, even if normal people never catch on.
And not just that, they come out with an iPhone that has _no_ camera as an attempt to really distance themselves from all the negative press tech (software and internet in particular) has at the moment.