As I recall Apple did a similar thing with the original iPhone OS, one team took the iPod software as a starting point and another took OS X as a starting point

As I recall Apple did a similar thing with the original iPhone OS, one team took the iPod software as a starting point and another took OS X as a starting point. I think I have that right. If in the end it makes the best product it's probably worth the waste of having competing solutions. But that is kind of a big if. (I would say the iPhone passed that test, personally.)