Some countries where is a ban on crypto the banks and government work hand in hand to block any account related to cryptosystem transactions.
Government sees cryptocurrency as a challenge to their banks and they try much to frustrate the adoption because they fear that crypto may take over the bank as they run investment with customer's fund and such third party investment through the government is not possible with cryptocurrency as such no direct benefit to the government like interest unlike the bank charges and other bank and account services. The only way that government can generate income through cryptocurrency is tax levy and surely it will not be hundred percent because some people will evade it.