That's an important point. Hence the need for cross-chain swaps.

What I predict is this: When people become disenfranchised be the current system, some of them end up in the crypto space doing work for crypto, hence creating ways to spend crypto for goods and services. That way, there is less need to go through centralized exchanges. With cross-chain swaps, one can transfer value from one chain that could be used for one type of activity in one region to the next that is used for something else. At the top of the value hierarchy, there would be Bitcoin, the ultimate savings technology.

Add mesh networks and strong encryption to the mix and you could end up with an expanding barter network powered by crypto as a medium of exchange. No doubt the authorities will try to enforce tax and AML laws. But when tens of millions of people in the US end up in dire straights chances are that these networks will be able to keep a lot of people alive.