No, none of the governments can regulate bitcoins. Because bitcoin is not specific to one country. People from all over the world use bitcoins. So how can a government regulate it? Its impossible. Its price depends on various factors. But government can do one thing. It can ban the usage of bitcoins and stop the services of bitcoin exchanges in that particular country like what China did recently but it can no way regulate it.
Once the bitcoin is been made as a legal money that concern country can regulate the bitcoin usage in their country alone. I don't how you understand about the regulation bills in your country. Like China none of the countries goes to ban the bitcoin even Korea also give a ban for ICO coins alone. That mostly damage to eth since it is been made using smart contract project. Japan can regulate the coin under and country's rules and regulations.