Some counties have already adopted Bitcoin but they're countries that aren't strong financially, I have said this before that no country that are financially strong would want to give up control that they get from their local fiats to adopt a decentralized currency that they have no control over, in the future things like this might be happening more often but for the meantime many nations will be discrediting the cryptocurrency industry just to make the fiats currency strong but it won't work.

People can't be deceived forever, Bitcoin is better than the current fiats system so if Bitcoin was to be adopted as a global reserve currency, things would be different than what it is but that won't be happening soon. The elite nations that are enjoying the flaws of the current currency system won't want that to change, they would want this to continue until it's no longer beneficiary to them.

It's going to be a long process before Bitcoin can be declared a globally reserved currency but for it to be accepted as a alternative to fiats, that's just a matter of time. The more the fiat currency keep losing value and importance in the society, the quest for a better currency will be ignited and Bitcoin would come to the rescue.