Things Apple can do to kill off the clones without the need to go to court!

It wasn't long after Apple switched to x86 processors before people figured out a way to run Mac OS X on non-Mac hardware, and this gave way to unlicensed Mac-clones like the Psystar OpenComputer.

Instead of battling the clones legally, I suggest things Apple can put into action and kill off the clones without any legal battle and bad media coverage.

1. Custom chipsets. Before the switch to Intel processors, Apple used custom chipsets and PowerPC processors, those two stood as barriers against cloning. Now though Apple uses processors and chipsets that are readily available off the shelf.
2. Sell OS X as an upgrade, don't sell a full version of OS X. Any upgrade will require a full version of OS X to be preinstalled. All Macs come with OS X preinstalled and a full version of OS X software.
   

This way, Apple can limit and possibly kill off the clones, without having to battle it legally or having to punish Mac owners with things like Windows Genuine disAdvantage and Windows Activation.