This can't really work on the long run / at scale, ya know... Someday someone will make a script that does the equivalent of the above, then somebody will make an alternative app-store GUI that leverages that script to get anything that's open-source for free. And you can't really sell as SaaS <$10 "apps" - so in the end you have two options: (a) classic closed source and (b) pay for subscription / user account (ok, there are the adds/in-app-purchases financed ones and they could profit from the "paid open source model").