Last time I checked, the competition for jobs at Apple Stores was pretty fierce. If they're not getting a fair wage, then they should quit and get another retail job. And if they economy is bad and they can't find another job, then they should be happy about their current job and not complain. And if they don't like working retail then they should study for a new career that's higher paying.
The people working in the retail store don't have anything to do with Apple making billions of dollars per year. (Yeah, sure, Apple needs retail staff, but like I said, if every single Apple Retail employee quit today, Apple could have the jobs all filled by tomorrow, and in two weeks the store's sales would be the same as they are today.)