I think because users in these countries are more open to technology and knowledgeable about the advantages of blockchain technology. Regardless if the price go down, these users are optimistic because they know the market, they study and analyze the market more than the others.
they can accept something that is new for them and they can learn about that things especially we are now live in the new technology which so many new technology release around us. and if we don't prepare from right now, we can be left without any chance to follow the technology. actually, many countries have open minded for new technology but they are not ready for something that smell like a currency because it will makes them cannot control like their fiat.