You know, I hope you're right but I think such a high valuation in two years may not be realistic. Simply put the market cap of BTC by 2019 at a $700,000 per coin price would be around $11 Trillion, more than the daily volume traded on Forex (~$5B)

These things do move in waves for sure. And we just hit a massive one upwards over the past few months. But I don't know if it can sustain that level of acceleration by extrapolating three months of data and projecting it forward two years :)

But hey, I'd personally love to be wrong here. Crossing fingers hehe