If all the people who love RSS and make software for it, feed readers, editors, blogging software, put our heads together, we could make a great network for people to write on, that would be so exciting, it would pull a lot of interest from the silos. If momentum builds, they will eventually add RSS as an inbound and outbound format because they will want to be on this network.
We, as writers, shouldn't have to live with the compromises that come from having to make 5 versions of everything, and still you don't have a way to share a lot of the interesting stuff people write.
If we choose to work together, even just a few of us, we could make big change.