How so?
That said, I certainly don't think Apple developers are badly off compared to Apple janitors, or Bay Area fastfood workers. And it's not like countries like Japan and Germany are slouches.
And it's possible that the article on Apple under discussion is false, as some commenters claim.
[1] http://www.forbes.com/2003/10/10/1010grovepinnacor.html [2] http://books.google.com/books?id=Y75K660UfzsC&pg=PA293... [3] http://www.newamerica.net/events/2008/why_world_isnt_flat