The Jolla community is currently discussing which components of Sailfish OS are more important to be open sourced, and how this could improve the OS. In February, Jolla's CEO wrote on a blog post: Previously we’ve also mentioned that we’re working on the further open sourcing of Sailfish OS. read more
Ubuntu, Android, and Firefox are all open source, and the 2 latter are doing great, and the former not having enough time for us to judge their success. If you open source all parts, only good can come from it. read more