Thats because in order for osx86 to work, you have to hack the kernel and several kext's. They all get reset and updated in system updates. FWIW, not even iTun

Thats because in order for osx86 to work, you have to hack the kernel and several kext's. They all get reset and updated in system updates. FWIW, not even iTunes updates can be safe. They update Quicktime a well - which Apple has used to break osx86 in the past.