For a long time, Polaroid pack film cameras had two sources -- Polaroid and Fuji.
Mind you, I'd love to have one of those, and I don't (much) mind the cost of the materials -- but to spend that kind of money on a camera, it'd have to be something I can at least be confident of feeding for at least a generation. And without spending more than the camera cost to "upgrade" it as it done with the old roll film Polaroids. Yes, Polaroid made the roll film for thirty years, and between Polaroid and Fuji pack film ran forty-plus -- but who knows if Instax will still be around in 2025? For a $100 camera, I might not care, but for almost $700, I care.