I'm not sure this is true with an arm processor. A lot of semiconductors companies are working on an arm version  , and optimizations for low power.<p>And the arm platform is quite an open platform. I bet any successful company can work with big semi companies to tweak chips.<p>The biggest advantage is secrecy.If apple has some unique feature - it gives them the time to secretly do research on processor architectures for it.<p>But not a lot of value for features everybody are looking for. in this case open r&#38;d is better.