In opposition to the crypto currency, governments will definitely benefit, because they have powerful levers of control and coercion, which have been formed for centuries. Decentralized crypto currency must go in a society governed by governments. Therefore, the rules of circulation for crypto currency will be set by them. Crypto-currency should not be too much of a conflict with governments, but one should not concede in matters of principle. As always, the golden mean must be observed.
At the moment I believe the answer is yes, but over time decentralized cryptocurrency will become much larger than global governments and there will be a true alternative for people that want to take money out of the current controlled system.