Bitcoin is an open-source, its design is public, it is decentralized, nobody owns or controls bitcoin and everyone of us can take part on it. I dont think bitcoin will end the government. For me bitcoin was made to assist the government in terms of economy, and not to stop the government.
Definitely this idea is more realistic in any way. Bitcoin might be decentralized but the government are having ways to be linked with bitcoin and that is the regulations on its transactions. Many might say that bitcoin is manipulated by some person but to think of it it only depends on how it works in the market and not by some manipulations.