In the end it somewhat boils down to pure greed. Instead of stabilizing production costs and/or reusing generic components to ease up manufacturing and repair - HP, Epson, Canon, Dell, Samsung, Kyocera and others try to hype their products with whatever tech stack is currently in trend. "growth hacking" is literally their job description.
There eventually will be a ChatGPT printer on the market. It's inevitable due to what kind of people manage a printer business: It's not the type of people that know how to build printers anymore.
All these companies still have their original core competency: Canon still makes optics, Brother still makes home equipment like sewing machines, and Nintendo to this day has not discontinued their playing card products.
Yes, you can buy Nintendo playing cards. I have several sets both modern and older and they’re very good.
These companies think in terms of decades and half-centuries. They may fall trap to occasional trends, but they’re not the ones who rush into a market to innovate; Canon started making a clone of a Leica camera and happened into doing the first indirect X-ray system in Japan, as a single example.