The whole point of our releasing appjet-in-a-jar is that if we go bankrupt, you can still host your app yourself.

We'll definitely charge money at some point, but right now we're focused on improving the platform for developers. Also, we have a spiffy virtualization engine for hosting apps that allows us to do it at negligible cost. So it costs us next to nothing to host our current load of 2,249 apps and ~3M combined monthly pageviews.