They're among the most successful retail operations in the world, and are a desirable employer for people working retail. Is there a specific reason you think they should "pour more time into making employees happy", or are you just inclined to say this about any company?

There was a thing a while back about Apple's retail employees complaining about low wages and few benefits, but I don't think that the allegations were ever confirmed, or that anything came out of it. The GP may have been referencing that.

Actually, a bit of Googling shows that this is still going on, with employees trying to unionize. According to [1], one person wants "to form a union to fight for better wages and benefits and to address what he says are unfair practices".

[1] http://www.reuters.com/article/2011/06/12/us-apple-idUSTRE75...

It's one guy, who says he's gotten little public support. But even if he had a deep wellspring of support: this is supply and demand. Apple is a highly specialized retailer that nonetheless can draw on hundreds of thousands of potentially qualified candidates. How could a union change that dynamic?