A year ago, some of us were hoping that Venezuelans would have adopted bitcoin as their currency (or an alt). But the rolling electricity blackouts not only mean you can't use credit cards, but you can't use cryptocurrency. So they've gone with old fashioned US dollars in cash.
*Sigh This is the biggest opening for crypto to get massively adopted and yet it still failed. How unfortunate for us and the crypto community as a whole to get beaten by its rival paper money. Well I guess that's the perks of fiat, it can be used without any further requirements unlike btc which requires constant supply of electricity and internet connection 
. This only manifests that our world is not yet ready to fully acquired this technology. It seems that we're still so far to the futuristic era 
. This whole real life case study shows that cryptocurrency won't get adopted in poor countries (because of lack of electricty). It will get adopted in rich countries - rich regulated countries.
Oops, it still depends to a particular country of course. Even how rich a country is, it will be pointless if they look at crypto as a threat but I'm hoping this kind of mindset will be totally erased on the mind of every nation.