Dismissing or deriding a project because it is not completely novel is unhelpful.

Since 'retroshare' hasn't taken the world by storm, maybe that wheel needs to be reinvented.

FYI, RetroShare has a solid and solidly growing community.

Of course, if you want to talk about "taken the world by storm" as in "Microsoft Windows 95": You're right, no encryption software has ever taken the world by storm. And that has to do with the fact that the general public doesn't care about privacy, b/c they have no clue how it works and most of all what the mid- and long-term consequences of losing privacy will be for their lives.