Just spoke with several financial experts with backgrounds in the banking sector. They told me once Japan opens itself up to the Bitcoin the currency is very likely to reach the 30.000 USD mark before 2020 since
Japan has been known to be a trendsetter and have high influence on the EU and US markets.
I am sure that those financial experts don't have any background and experience in cryptocurrencies. There is a huge difference in characteristics between paper currency and cryptocurrencies, the volatility of price is too high in cryptocurrencies that's why they are unpredictable, what could happen in future nobody knows.