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.
Japan did adopted bitcoin now and the price increased too fast last time. 3 years from now $30,000 is more plausible rather than McAfee's statement about 500k for 3 years. It's more reliable but it's better to see if the price of bitcoin will reach $500,000 I'm not losing my hope though but I'm fine if the price of bitcoin will be ever reaching $30,000 on 2020 better if it will happen earlier.