Quantum computers will provide access to data that's already been stolen

I wonder if the safest-bet solution in the future would be to literally break the internet into smaller, more manageable blocks that are cut off from other blocks potentially containing hostile state-backed actors (I don't think qubit-usage would become prevalent with true non-state actors anytime soon).

That would see the emergence of individual nets for the US, EU, India & China for example - which would only interact with each other through a handful of highly monitored transfer stations for referencing (e.g. wrt banking, financials), nothing else.