HP outrages printer owners after it blocks the use of cheap ink cartridges
smh.com.au
smh.com.au
You might argue that HP was "allowed" into those printers by some EULA agreement so that makes it somehow better, but if the cable guy whom you allowed into your house tried to walk out with your TV you might call it stealing...
If they're seriously allowed to do this, how is that different from just ordering all of the printers to dump their inks into the spill tray whenever they need a revenue bump?
So "remember that time when HP hacked all those printers and stole everyones ink?" seems about right to me.
(Warning: loud auto-playing video.)
Not to mention, you shouldn't have to make a choice between accepting a security update or disabling features that you bought.
I think it's actually a consumer protection issue, especially where hardware is concerned.
Any update that fundamentally alters the way a device functions from the time of purchase should be disallowed.
As to your assertion, cheap? Wait until the printer is a couple of years old or more. For my Laserjet:
Genuine HP toner from their UK store: £83 each colour, £49-£58 Amazon.co.uk
Lots of generics in the £15-£30 range on Amazon, and a couple of sets of 4 at £40.