Well it us true that different government's power has limit in controlling Bitcoin. But let's come to think of it that government has the ability to make policies that will affect digital currencies in one way or the other. In fact regulations of governments have been fingered in the low adoption of cryptos in many countries. For example, the anti graft agencies in my country recently were arresting anyone with crypto related stuffs on their phones or PCs. They said, they categorized them under internet fraudsters. We need more favourable policies that will support the mass adoption of Bitcoin and altcoins.