I admit that I’ve long been a big fan of Apple products, especially the iPhone, which allowed me to whittle down three things I often carried—cell phone, Handspring PDA (remember those?) and a point-and-shoot camera—to just one. And designing such compelling products has done well by shareholders of Apple (AAPL). The stock has more than quintupled since June 2005, when the company announced it was switching to faster, more energy efficient Intel-based chips for its computers, from the IBM-supplied G-series. If the introduction of the first iPhone, unveiled in January 2007, spurred you to buy the stock, you’re up...