Delusions of grandeur.   We are a gnat on the side of a bacterium in  
the gut of Apple's business plans - there is no harm that can come to  
them through our actions, and huge harm (bad press) that can come  
through them stepping on us.   All we have to avoid with Apple is  
doing something that deliberately provokes them - e.g., incorporating  
their actual code into NetBSD in a way that violates the APSL.    
Anything they really don't want us to know isn't in the APSL codebase  
- trust me, I've looked.   As it stands, creating an aftermarket for  
their machines that can run NetBSD after they stop being supported  
with MacOS X is great for Apple, because it provides a path for  
people who want to keep old machines and stay modern. If anybody has  
reason to worry, it's Terrasoft, but they don't have reason either,  
because they are just a bigger gnat in the same place we are.

If you enjoy worrying, go for it, but otherwise I'd suggest you get  
on with your life.