Just some idle speculation on my part. Now that Apple is been successful in getting the vast majority of OS X purchases to go through the MAS, how long will it be before Apple refuses to sell you the OS unless there is a compatible Mac also connected to that Apple ID? At the moment - for pre-Lion OS X - Apple is pretty flexible about installing OS X (I know the EULA states otherwise, and I follow the terms of the EULA). But we all know that there is no built-in restrictions on how many systems a retail copy of pre-Lion OS X can be installed on. With Lion, there is now an actual built-in restriction that Apple can and does enforce, on how many systems you can download the OS to. This is a new-to-Lion feature that they can actually physically restrict the number of installations - rather than relying our honesty. However, they don't have any way of enforcing the restriction of not installing OS X on non-Apple hardware. However, it would be simple for them to start checking to see whether a particular Apple ID had been used to register a computer that is capable of running Lion (or OS X 10.8 Fuzzy Feline ) before allowing the purchase of the OS. If you don't own the hardware, then you don't get to download the OS. The Hackintosh community should be watching this very carefully, since they are the ones impacted if this change happens.