I like to think PR and costs weren't the only drivers of this...Steve Jobs was quite the hippie capitalist, so I like to think he instigated a move into this space :)
My point was not to assume that this makes sense economically just because Apple did it. They have other ways of getting their money back and if they lose, it's just a rounding error http://finance.yahoo.com/q/cf?s=AAPL&annual
You sure have seen the Beyond Petroleum ads, haven't you? http://www.environmentalleader.com/2008/01/15/beyond-petrole...