The cat's out of the bag now. Cryptocurrencies will kept being used in tyrannical regimes even if under wraps, and governments will try to rein in to keep them under "control" in the rest of the world, but they're very much here to stay.

I expect stronger condemnation towards "anonymous" cryptocurrencies (Monero, Zcash et al) and making onboarding/offboarding for them more difficult, but that's about it.