I guess they feel they should just have it all at once, so they don't have to wait until they see how many sets sell before they make others. Or, as the case with most of the other sets.... release 2 or 3 sets and then have the fans sit on the edge of their seats waiting if new ones will be released, only to be told "No way, Jose!"The Powerpuff Girls was a LONG running series by today's standards. Six seasons wasn't it? Something like that? That's much too long running for a complete series set.
It's a good step, I feel... This way the fans won't be disappointed by it not being released on DVD legally, and having to buy some cheap-a-zoid bootleg collection.
This BETTER open up the door for other CN sets. I mean, a Courage or Sheep series set can't be that big... Maybe Courage is a little heafty... but Sheep was totally treated like the red haired stepchild.