I think part of the solution is to make sure there is a functional and tested decentralized system that's available as a fallback or failsafe, say in case the s

I think part of the solution is to make sure there is a functional and tested decentralized system that's available as a fallback or failsafe, say in case the system(s) get captured by tyranny or authoritarians; and these fallback systems must be enshrined in policy/constitution, so that if they're ever attacked or targeted then that becomes a canary signal. Data mobility could also perhaps be considered the other side of the decentralized coin.