There's certainly lots of real world governance models to try to draft and execute. Then there's another problem 1) Governance in the first place. and / or 2) That it's run by humans who are by nature corrupt. There could simply be some type of free for all network, new block refer to prior block, fork at will, solicit trust and longest chain adoption rather than sell it. Networks could be made to simply refuse to transact if parameters ever change... design it, launch it, and forget it, sink or swim. Users move their value from ship to ship. AI bots could execute within a novel network to - provide governance over humans, acceptance of patches. and or - adjust network paramaters by trial and error thus learning to solve its own problems. Some new networks may be created anonymously, where changes are locked to the anonymous creator by the AI. If creator disappears without key handoff, the net goes sink or swim at that point. Benevolent creator can quietly in safety cherry pick from some git repo community. Some users may just trust creator, or choose various creator nets that have some high vote% rollback and creator freeze options. Some many unexplored models and new ideas to yet come up with.