An HP rep once told me they push deceptive security updates to brick third-party ink cartridges so printer owners aren't tricked into printing out cherished family photos with ink that fades over time. Apple insists its ability to push iOS updates revoking functionality is about keeping mobile users safe - not monopolizing repair:
https://pluralistic.net/2023/09/22/vin-locking/#thought-differently
John Deere's killswitches protect you from looters. Adobe's killswitches let it add valuable features to its products.
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