@bernard:
Well the AppStore churned out 65000 apps in one year whereas sf has been around for 10. And are the 230k projects active ones with proper deliverables or not? Not to mention, many of the apps in sf are low level apps that may provide duplicate functionaliities of maemo \ mobile osx, making them irrelevant in this comparison.

BUT, on the other hand, a big % of apps in the appstore are single apps repackaged with different contents (ebooks, apps with regionalized contents, etc) AND they also got way too many junk kitschy apps (fart generators, etc).

Anyhow, aside from their output numbers, I don't think the 'motivation' of opensource developers is in line with what the mainstream consumers want. So, there lies the mismatch where the demand isn't being met by the suppliers.