Apple is pretty good at staying ahead of the pack. A good example is the iPod line. The Classic was the original and the only iPod for several years. It was a high-end product selling for over $300. Eventually the market shifted towards smaller/cheaper players the Apple was able to make the Mini/Nano the most successful iPod while the Classic is now a niche product. Now the market is shifting towards convergence so the Nano gets more features and the Touch/iPhone become the future of the iPod. It will be interesting to see where they go from here. I don't think they'll make any big moves towards diversity until the market proves there is demand for it.