I had an experience in another industry similar to what printers are doing. We used to use standard, easy-to-source-from-3rd-party 6-port valves on one of our instruments. Customers loved it, since the valve would need servicing now and then with replacement parts but the company president only saw lost recurring service and support revenue. To complement that perception, the VP Engineering decided "our systems should use our parts". So we embarked on "designing" our own new 6-port valves... Which consisted of putting the original 6-port in a welded box with a manifold and calling it our own. Since it was "new" we charged more, while paying less, and obviously telling people that to not use the new system was to void the warranty, and oh by the way, only we can service it. Naturally it came with a firmware that would be recognized as "official". When one of the clients discovered the truth, and provided our support team with evidence proving the new, more expensive valve system gave a slightly poorer performance, management's answer was to threaten to sue. They sold their instrument and went to the competition.
So yeah, it's an anecdotal n of 1, but I would say mostly perceived loss of income, publicly justified as better design