I'm curious if there is any sort of EULA or click through licensing that prohibits this, or if there was any low level DRM that needed to be hacked around.
Apple has a history of trying to thwart efforts to run their software on other hardware, but I don't recall any efforts to prevent other software from running on their hardware. They area a hardware company, after all.
Luckily depending on where he lives EULA/Clickthrough/Wrapper licenses are either illegal, frowned on, or "We'll add that into consideration.". If he's in the US, then it's by state. Outside of the US it's by country.