See the new iMovie and GarageBand apps that were launched at the iPad 2 special event, and you can not longer think that iPad is good just to consume content. (See demos around minute 40 to 60). Music creation and video editing gets easier than with a laptop.
Everyone can be a creator now. The age of a few elite artists with the means and the monopolized distribution is over. The long tail of content is going to be only bigger and longer.
Now we can confirm that personal computing did actually change forever in April 2010.