From a Cupertino childhood full of shared enthusiasms to Ning and Mighty Networks, Gina Bianchini has kept returning to one question: what makes people worth coming back for?

Community leaders keep treating software ownership as strategic leverage. The harder truth is that advantage usually lives in the programming, relationships and insight layered above the platform.

Two platforms, two decades apart in age, are chasing the same prize - the online communities that creators and brands actually own instead of rent from a social feed. Here is what each one is really selling.