Well I have a friend that basically has every app for the mac book you could want, and I don't know how he does it but he definitely got them all for free/illegally and can write them to any computer he wants. I also know he has over 7 terabytes of storage for his shit and its all full. He does a lot of work with final cut and some music editing software so he knows whats up when it comes to macs.
How it all works I have no idea I just know if I need a mac app/program I go to him.