It is absolutely a money thing. If Apple didn't have to worry about the commercialization of MacOS, then they could publish the driver code so Windows and Linux

It is absolutely a money thing. If Apple didn't have to worry about the commercialization of MacOS, then they could publish the driver code so Windows and Linux clients could offer support theoretically "forever". They do not publish the drivers though, which means groups like Asahi have to waste their life-hours reverse-engineering for sustainability purposes.