Earlier quoted context omitted.
I could play games, take pictures, send them to friends, surf the web, chat, "share my life" and meet new people with computers fifteen years ago . The iPad has made that process easier and better, and to some extent cheaper. And it's a great product. But that's not "disruption", it's just plain old improvement.
People could do everything an Apple II or IBM PC could do fifteen years before those machines came out. But most people didn't, because it was extremely expensive and cumbersome.
Ergo: the iPad is not a disruptive technology. It's just an improvement on existing stuff.