Meh. I don't think software people understand just how disinclined a non-software person is to do anything requiring configuring serverside stuff. Even torrents, where clients have essentially become good enough that all you have to do is install them, most people get a friend that has some understanding of computers to set them up for them. The cloud is really a better model if you want to achieve widespread adoptio…
even if those non-technical people don't host their own data, they'll be able to switch to something else that may have different privacy policies.