It's a limited solution at best. You can't win a tech arms race with the very people who control the core infrastructure, write the laws and run the police. Just ask the pro-Democracy protestors in Hong Kong.
We have a heavily contested information space, & so far we are still not an authoritarian state. It seems defeatist I'm extremely to say it's not worth trying to build a better less manipulable less privately controlled information space. It seems obvious that there's still time & patriotic as hell - fully committed to democracy & people, over large institutions & powers.