If the intent isn't to stop generics, why have DRM on an ink cartridge at all? Even if this instance is due to HP making a mistake, such as forgetting a certif

If the intent isn't to stop generics, why have DRM on an ink cartridge at all? Even if this instance is due to HP making a mistake, such as forgetting a certificate renewal, the intent is there right from the beginning, by using the DRM in the first place.