No chance that governments are able to shut down cryptocurrencies like Bitcoin. The horse has left the barn. We know that these assets by their nature are de-centralized meaning there is nothing a central government can do. Bitcoin etal are truly lke water...dam it up in one area and it will find a way around it.

Atomic Swaps hold the most promise. Consider the idea that it might be possible in the near future where no exchange is needed. This will make control/stopping completely impossible.