A government still can get control practically. They cannot stop the service itself but can regulate payments from their citizens to the service. It is like online casino.
Of course, there may be some loopholes for payment and some citizens who access the service as well as online casino.
One example of a loophole: Pay with Bitcoin/have someone on the outside of censorship pay for the service and you pay them, then you connect with those paid for credentials.
Of course, there may be some loopholes for payment and some citizens who access the service as well as online casino.