2) Maybe they will be bringing along the big guys, in the future. Java is being deprecated (http://bit.ly/cFp0GX) in the future the may require apps to use the standard API.
3) ARM chips are getting much better. The A-15 is going to be multicore and be up to 2.5 GHz (http://bit.ly/bhVKBP). It is totally possible for apple engineers, gotten from PA Semi, to string together more cores to make a more powerful process. Difficult and costly, but possible.
The problem I see with this line of thinking is that ARM is only a 32 bit arch right now and I don't know of any plans on changing that. Also, having the big guys convert their software over to using ARM instructions over intel (point 2) would be really painful, I think. LLVM and some good virtualization might help mitigate this, but I would have to research that more.
Also, I'm probably completely wrong and I'm fine with that. You have very good points and I appreciate all of them.