Decentralised/permission-less AI is one of the most important use cases but so is proof systems. Eventually everything will have to be verified, a bit similar to Blade runner.
News outlets will be forced to use software where users can authenticate the video material to make sure its real and many more. We already cant distinguish AI vs non AI videos.
Same as i want to be certain my humanoid is not teleoperated, i want to be able to verify these actions are powered by the model its running on.
I think there will be a lot of demand for something like ZKP's once its economical viable.