Governments are not scared by bitcoin, some bitcoin evangelists want them to be so they can use bitcoin to advance their agenda of being anti-government. Some governments are concerned about bitcoin influence and consequence, based on their instinct to be authoritarian in providing protection and stability.
Precisely. Just because Bitcoin is trying to break the governmental monopoly on money doesn't make it anti-government. It doesn't even make it anti-fiat.
Bitcoin is simply providing an alternative to traditional currencies and payment systems. And a much needed one at that, given the ever increasing push towards monetary control and permissioned payments -- both by governments and cooperations.