Anonymous cryptocurrencies will never be controlled by the government or any organization. And anonymous cryptocurrencies are safe havens for money laundering offenders and related matters, so governments around the world now ban anonymous cryptocurrencies and don't allow any citizens to use them. In the future, I think anonymous cryptocurrencies will face major barriers from governments and I think they will be very difficult to grow like other cryptocurrencies. It will even die and be removed from exchanges because of strict requirements