We're not immortal, but I'm glad you think so. We strongly believe in open source software, and we want to be a part of it. Cappuccino is our way of doing that. Plus, with something this cool, we just couldn't keep it to ourselves :)
But, for the record, Atlas will be a commercial product. We are not yet ready to release details though.
Most YC startups are desperately pimping their little web sites on every techcrunch they can find, consuming every open sourced library there is, without contributing much back, while you're sailing along like open source gods, immortal, living off the sunlight.
I know about 280Slides, but it seems you're mostly about Atlas and Cappuccino, so which one is your monetizable product? Or did I nail it with immortality? :)