In the Moslem Countries like Saudi Arabia, Qatar, United Arab Emirates even Brunei Darussalam etc were enacted Islamic Economy System based on sharia. Is It Possible that The Moslem Countries can accept the cryptocurrencies system in their economic system? What's your opinion?
Cryptocurrency system does not have reservation for any religious kind of economy or country. Even the countries you have mentioned I am certain are already participants of cryptocurrency. It is just left to make it official, which is what every other country is also waiting for.
The author of the thread probably does not know that many Moslem countries actively work with the cryptocurrencies and use the blockchain technologies. United Arab Emirates was one of the pioneers to start dealing with BTC.