Bitcoin should have the first to be Monero, but we know that private coins can have a hard time in the face of regulations coming from many big governments. Ideally speaking, the government should not ahve a factor with cryptocurrency, but we are living in a reality and not in a vacuum. Regulations are in place and no coin can ever grow as it should be without being subject to regualtions. Of course, there will be many to object on this idea but can anybody really go against the government on this regard? Japan has already expressed its plan to limit the use of private coins. And I am sure that there will be a time when even USA can be following the lead. Now, it is safe to say that China and Russia are two countries no friendly to private coins even if it can allow Bitcoin in the future.