There’s a post on Slashdot about the failure of PDAs in the iPod era. I don’t have any time to blog it proper today, but here’s the simple answer : The PDA is a grabbag of features, the iPod is a platform for music delivery.
The PDA can do everything that the iPod can and more, but if you’re thinking features you’ve already lost. The iPod makes is simple for most folks to get the music they want and funnel it straight into a device. Integrated delivery chain from server in the sky to device in your pocket. That’s what makes it a success, not features.