Earlier quoted context omitted.
According to Apple software license agreements, yes, it is too much to ask. You can not legally run Mac OS on non-Apple hardware. But don't be sad, their new Mac Pro is fantastic .
The EULA says you can't run Mac OS on non Apple hardware? Pretty sure these terms are not enforceable in Europe so safe to ignore.
I take it you'd have no objection to Google forking the Linux kernel for Android and refusing all requests for the source code.