Again, you appear to be confused. Copyright infringement is taking someone elses work and selling it as your own. If someone manages to install osX on a PC, they are not violating copyrights, only the EULA. And, in violating the EULA, the only thing they have to worry about is not getting help from the manufacture.
Now, if they installed it on a PC, rebadged it as their own and tried to sell it to the public, THAT would be copyright infringement.
Ed.