rsync is right. There's a lot of factors at play to make those missiles worthwhile to those in power. Whereas, they won't waste effort on bitcoin until they get similar gains or it's similarly a threat. Right now it's definitely not a major threat in their eyes. It's barely even a minor threat with all the crooks using stolen credit cards, money mules, Western Union, etc. Vast majority of damage done on that end of things. Their big investment to deal with finance is the same they'd use on Bitcoin transactions: mass surveillance of Internet and financial system. A multi-use technology that helps in more goals. ;)