I ran into this years ago with my nearly $1,000.00 Canon printer that I bought for making gallery-sized photo prints. It had 10 ink cartridges, and a set from Canon cost $150. From an ink cartridge manufacturer, sets were $30. Canon had their ways to nudge you towards their ink, although not as bad as HP's new scheme. There was a little plastic accessory that could be fitted, that allowed printing onto blank printable DVDs, and editor software for doing that. The plastic accessory and editor came with the printer.
I wasn't in the business of creating commercial DVDs, but I did print a few to give to friends. That was at a time when DVDs were still used a lot. But one day I started to print one, and got the error message that essentially said I'd been found using non-Canon ink cartridges, and I would not be allowed to use the printer for that purpose any longer.
It ground my gears, but didn't really cause me any hardship. It was the last Canon printer I ever owned, though.