What I have wanted to do for years is setup additional scripts/packages that act like DigitalOcean's droplets but for XMPP/mail server/ownCloud/MediaGoblin/etc. A one-click package that you can drop onto any host or your own machine and possibly having one-click streaming encrypted backups to wherever you want. So you can basically run a community site without worrying about being taken down. If someone doesn't like storing their data with you they can also just follow 5 steps and have their own setup.

The problem with proprietary is that someone else in some office, usually a middle manager or pointy haired boss or marketer, decides what the priorities are. So even the low hanging bugs aren't fixed and are simply avoided or worked around.