Perhaps Bitcoin will be adopted by central banks as a reserve asset, but nation states and their governments are unlikely to release their citizens from the noose of fiat debt slavery. Losing fiat hegemony weakens a government and its ability to leverage citizens wealth to embark on projects (like war) that build or defend the collective wealth and security of the citizens. You could argue the nation state is no longer requires but good luck trying that. You would be invaded the moment you tried it if you had any territory or wealth significant enough to attract conquest. Governments have always been fundamental to the wealth of nations. Because individually people are inherently weak and vulnerable when confronted by an organised group.