Bitcoin has actually made a financial revolution, where Bitcoin has innovations that no one can ignore. And Bitcoin has scarcity, where it makes the value even higher. These things attract many people to adopt Bitcoin. So I think the government can no longer ignore the power of Bitcoin's innovation. In the end they chose to collaborate with it through adoption.
Governments can ignore Bitcoin easily but what they can not ignore is the power of their citizens. In countries with democracy, if their people, citizens demand to have Bitcoin acceptance in the nation, governments can not ban it or they can try to ban it but will fail to maintain their ban forever. Their citizens will time to time ask for regulation changes that eventually will happen.
So I personally believe that Bitcoin will become legal tender if a country initiates it. And I am sure that country will be the winner, where that country will have many advantages by doing so.
Don't expect Bitcoin to be legal tender in your nation or all nations in the world, it is national regulation and no countries are the same as well as their approaches on Bitcoin legal tender will be different.
It's very fortunate that with Bitcoin, if you have private keys, you can own and use your bitcoins very easily and don't need any Bitcoin legal tender enforcement from your national government.