He almost says the reason why it will be a hit (the-best-of-all-world!)
"Instead of lugging around a phone for making calls, an MP3 player for listening to music, and a Blackberry for checking your e-mail, you can do all three on one device. Even better, you only need one charger."
There is one thing I fail to understand. I have seen the low end Android phones complaining about low space. This implementation makes apps to occupy more space that they normally would - making the above mentioned problem worse.