that is right. However, teh Estonia has smaller economy size than Japan. I think Japan is more influential.
Japan is one of the biggest economy in the world so its pretty obvious that they have a lot of influence. I will add up Switzerland and Belarus in the list.
1. Belarus - offering 5 years tax free, on mining, trading and ICO and even related to crypto currency
2. Australia - already embraced and adopted bitcoin since July of last year
3. Switzerland - just put up guidelines to assist ICO startups.
https://www.finma.ch/en/news/2018/02/20180216-mm-ico-wegleitung/I think the trend will continue in the next couple of years. More independent countries will be crypto friendly or at least have a friendly regulations unlike China.