I very much doubt that Skate because if that were the case then Intel would have ensured that Apple aren't in the position they currently find themselves in and the AMD64 extensions wouldn't named the way they are.....however if that's down to Intel's original 8086/88 architecture and development then they've done all the hard work to put themselves into that position in the first place.

Edit: And a 2 minute check shows your statement to be nonsense because it's a cross-license agreement between Intel x86 and AMD's 64-bit x86 instruction set.