Shortly after I posted I Love HP Printers this issue came to light:
HP printers start rejecting budget ink cartridges (BBC)
“Large numbers of HP printer owners found their printers stopped recognising unofficial printer ink cartridges on 13 September.”
Basically HP purposely time-bombed/limited/eliminated the use of 3rd party ink.
Unethical but unsurprising behavior.
EFF.org has more info and a petition over this matter: Tell HP — Say No to DRM
HP and DRM
