By the way, Apple forcing users to install apps only via its 30% fee AppStore has provoked far less outrage. Probably because people are not directly aware of the Apple premium, in contrast to the HP premium.
Part of the difference here is likely due to Apple primarily penalising the developers (second order effects hit the consumer). If Apple were directly hitting consumers it would be a louder series of protests.
HP are targeting the consumers, not the 3rd party suppliers, which Apple hits.
It's because it's developers who piss and moan about the 30%, while most consumers get value from having to go through the AppStore, such as 1.) being able to cancel subscriptions quickly and easily and 2.) ensuring that developers aren't abusing permissions to siphon data from the device.
You get nothing extra from buying HP first party ink otherwise they wouldn’t do this.
So it's a significant difference.
iPhones and iPads, you still can do other things, it’s not a paper weight cause you rooted your device or sideloaded an emulator…