Well, people use them, and stuff. There are actually games for the Mac, they're just a little sparser than their PC equivalents.
It still shows Apple's attitude towards people running their OS on other hardware. Even though they lost this lawsuit, that doesn't stop them from writing the next version to look at the hardware a bit closer to try and stop it. Though that isn't really relevant in this discussion. What matters is the current state of both systems. If that changes enough in the future, people will switch between them.