Quite interested but current BTC are very few countries accepted as payment services
Legally accepted means expect Japan none of the government did not have the legal notice to say bitcoin is being legal there. So for payment service also you do not need to worry about the acceptance and all. None of the government or anyone cannot have take the control over bitcoin.
I see the investors really do not want the any regulation to stop them that is why people are taking concern to paying taxation and many things while they are involved in trading and all mate.