To nitpick, I think the best outcome would be decentralization, not federation. For many people needing to pick a provider is a problem. It would be great if yo

To nitpick, I think the best outcome would be decentralization, not federation. For many people needing to pick a provider is a problem. It would be great if you could control your own information without needing to trust a hosting provider. The ideal state is probably somewhere in the middle. My identity is controlled by a signing key, but I can also have service providers do things like host that data so that it is always online, even if my devices are all off. They can maybe also buffer messages for me and do some aggregation so that syncing is faster when my devices come online. However if I want I can just move to a different provider with my key.