Is there a choice in inkjet printers that will provide you with a list of 3rd party ink suppliers, and perhaps even encourage use of recycled inks from 3rd parties? If so, how would people know about that until after they'd 'voted with their wallet' and purchased the product?
No sane businessman is going spoon-feed what can be considered the bad facets of his product to potential customers. They call it 'the information age' for a reason: whether it is inkjet printer, smartphone or pickup truck, you can find reviews for it online, in magazines or just find someone using the product that interests you and asking them how is it.
And if you are not doing research before purchase, there are only two options: either the product/sum you are going to spend is not that important to you, or you are about to get a valuable lesson.
Any way, I'm not trying to campaign for Apple, Google or Gruber here - I am trying to point out that this is how the market works. If you would rather have it differently, join/start a political party.