As Bitcoin grows large enough to represent a real threat governments might make noise about regulating it or shutting it down, but the entire time politicians are spewing hot air insiders throughout the bureaucracy are going to be quietly stashing whatever money they can get control over in Bitcoins. All the scare stories that pop up between then and now are designed solely for the purpose of scaring early adopters into letting go of their bitcoins so those who don't have them yet can buy in cheaply.