No body mentioned taxation issues and there are quite a few of those these days.
More and more governments started to recognise cryptocurrency, introduction of new means of taxation was just a matter of time
Actually, I intentionally omitted this part in the OP to keep it readable
Though I didn't mean taxation in particular but rather government regulation in general. Obviously, if Bitcoin payments are frowned upon by the government officials, we can't really expect mass adoption by merchants like Amazon and their likes. On the other hand, any law reflects the social fabric objectively existing in a society (i.e. laws are secondary), and if a lot of people start using crypto without looking over their shoulder, the government won't be able to discard these developments. Otherwise they run the risk of people "discarding" the government itself (like it happens in Venezuela right now)