I think some countries do not accept cryptocurrencies because of their culture and government intervention as this will affect banks primarily and other financial institutions. As the trend spreads quickly and acknowledge as mode of payment to various daily transactions.
Bitcoin cannot be considered controlled because it is fictitious. Therefore, all countries do not recognize the status of Bitcoin.
However, although Bitcoin is fictional and cannot be controlled, because of its scarcity and anonymity, Bitcoin has become an important transaction payment method for illegal transactions on the Internet.