Printers are the text book examples of why device manufacturing shouldn’t be left to big companies. You have tracking dots, spyware infestation, subscription for ink/toners, reporting of the cartridge as empty when you still have much left in it, refusal to print when unused color cartridges are empty, intentional bricking if 3rd party cartridges or ink is used, and utterly crappy firmware in general.
Inkjets require precision manufacturing. But assembling it or other types from components should be possible - like how desktops, mechanical keyboards, etc can be. We really need to ditch filthy mass market printers because DIY printers will be much better than anything they offer.