I get the point that you don't like this line of inquiry, but "something more risky" isn't "definitely lose your competitive advantage". And, again, it's a question, not an accusation. I'm curious...trying to understand the Apple reputation in the open source area, how much of it was deserved or not.

Certainly, Android is more open than Apple's mobile OS. Google does hold some important bits back. But, still, it is "more risky". Hence the question. I may be missing other areas where Apple was open sourcing things that were more core to them.