It is not going to be a quick fix, it is a slow grind that I personally don't expect to see the results of but, it has already started.
In many off those places the centralized systems are already crumbling so they might be the first early adopters to use distributed networks at the local levels. Look at how they organise the transfer of Steem into local currencies already while we are waiting for Coinbase. Necessity as they say.
The risk with China is them making life lived easier through working centralization and they have some experience.
Yes, Venezuela, for example, has a fiat-Steem bridge implemented called Orinoco or something.
China is indeed poised to show a very bad example. The Chinese have a long tradition of centralization. Where they're going with their social credit scores is nothing short of nightmarish. The Chinese will be able to technically pull it off but because they have pretty bad problems with abuse of power the system will no doubt cause major problems.