This is the dying gasps of an industry that is mostly irrelevant in the modern age.
When I was growing up we always had a printer, and while ink wasn't cheap, it wasn't too bad, so we used it a lot and printed everything we needed. The industry grew to expect this, most households with a computer also owning a printer and regularly buying ink for it.
This isn't the case anymore. So much of our lives happens "digital-only" that printers aren't needed by most people, and those who do need them don't need as much ink. I have never owned a printer myself, and my parents still own one but buy ink on a yearly basis now.
The market should be shrinking naturally, and so every printer company is trying everything they possibly can to grow or at least keep from shrinking as much. In the panic they are in, it's understandable that this will lead to crappy business practices.