Do you think Apple wants to control all the old iphones so in the near future people can't repurpose them for inference servers once all hardware gets jailbroken by AI? I forsee all software and hardware becoming unlocked by anyone since there is a will and the way is becoming so easy with AI assistance. The cat and mouse game is about to end!
Apple rather wants to make it unattractive for users who frequently change phones to
1. Consider trying other brands
2. Pass on their existing (still quite capable) phone to a family member (taking him/her out of the purchasing loop)
3. Stick with the existing model for longer as they don't find a compelling reason to upgrade.