This main issue of centralization is power to control from a minority over the majority and as the Bitcoin protocol was discovered by Nakamoto, this is almost non-existent.
Is this thread aware of the power miners do have over the network in terms of "governance"? It is very limited. Understanding the technical details of the Bitcoin Protocol and "governance" or at times consensus models, in which, to move Bitcoin in a certain direction in a centralized manner is null in regards to one "arm" of the Bitcoin network (miners which are in discussion here).
Also, if you are worried about governments, don't be at all! Free markets and decentralization are the remedy (which Bitcoin is). Second, get out of your mind control in which you believe someone or some organization has rulership over you. Learn how to stand up for yourself against these psychopaths (governments). You rule your life, they don't (unless you sign a contract with them).