legalizing cryptocurrency in country is a difficult, it depends on users cryptocurrency and bitcoin, "how cryptocurrency users participate in state regulation, and demands legalization, by judicative means.". cryptocurrency legalization statistics is very dynamic, and when you see some effort to start receiving bitcoin, it signifies the global elite has received bitcoin as a means of payment.
Honestly there are many countries right now are legalized bitcoin like in brazil, paris, india , japan and here in philippines and i think there are more country right now are using bitcoin locally and they are not experience of any problem using bitcoin as payment the only problem that i think i can see in bitcoin is the price is not stable and bitcoin transaction is anonymous but as bitcoin payment there is no problem using it..
So legalization is not difficult as you said..