Government doesn't rely on anything it does t have control over. Gov doesn't use internet it has arpanet. You see military prefixes on the bgp table?
Comcast broke BitTorrent until gov stepped in you think gov can't step in and make isps meddle with btc headers? What happens to btc when transactions clog up?
Of we use btc world wide, what's to stop China from turning off CenturyLink or claim a cyber attack took them down to cripple a foreign government?
You clearly assume a lot about how the internet stack works.