If the PERM process at Apple is anything like what I saw at Facebook a couple of years ago, then all these “applicants” are actually people already working at the company on non-immigrant visas whom the company wants to retain.
There is no reason to assume that they’re being paid any less than others at Apple. They’re already in the country and have been doing the work for years. Why not give them a path to a green card? Why make the company jump through hoops like having to advertise a position that’s not actually open?
I’ll admit that I’m biased because I was in this process at one point. But the notion that I was taking the job of a native-born American was ridiculous because I had been doing the job in London before. So if anything, I brought a UK job to USA. And to turn that into a green card, the company would have to advertise the job on their website. It makes no sense.