This is the existing problem why bitcoin can't be legit all around the world. Us, its supporters, need to know that bitcoin will not be a a legit system soon.
The governments don't like bitcoin and its uncontrallable features.
Governments all over the world will legalize bitcoin pretty soon,which means that they will bring in more rules and regulations on how things work with the exchanges and how people could send money and the restrictions imposed and so on,so what i feel is there will be more restrictions for bitcoin in the name of legalization.
I can't deny that they will do such things that you've just said above. Our government have regulate bitcoin, now if you're holding bitcoin or transaction with it, it can be taxed. They the government will try their best to control it even though they can't control it completely. Well is it just me or,,,, that i don't like legalization of the bitcoin it might be good for bitcoin adoption but i just love bitcoin being decentralized without intervention from the government.