The real reason isn't that the system would be GPLv3. The real reason is that GPLv3 includes a patent grant clause, which many companies (Apple included) are ve

The real reason isn't that the system would be GPLv3. The real reason is that GPLv3 includes a patent grant clause, which many companies (Apple included) are very worried about applying to them if they ship GPLv3 code, therefore they don't.