I think many of you just don't get it. Intel used to make ARM processors: StrongARM and then Xscale. Afterwards, they kept the licensing because of one thing: patent protection. By maintaining licensing with ARM, they were also protected by any kind of patent dispute arising from ARM or its other customers. If ARM produced some new feature in their processor, they couldn't sue Intel for patent reasons if Intel copied it because ARM customers get patent indemnity as long as they continue to pay for licensing fees to use ARM technology. I actually wouldn't be surprised if ARM was also paying Intel for a similar license fee for x86 just so Intel couldn't sue them for some new instruction set patent for SSE or something like that. ARM likely already pays for patent licensing for their graphics design because they would need MPEG licensing through Fraunhofer to cover H.264 acceleration, as well as VC-1 licensing from Microsoft's patent house (VC-1 is part of the Blu-ray spec too).
These types of contracts are common when you're talking about well-protected engineering and manufacturing secrets.