In my opinion many things will happen in this time. There will be more interesting blockchain projects and those who entered this market with their ideas in early-mid 2017 should show the world what they have done. If all things will be according their roadmap than I see the bright future of the market and new level of crypto development in all directions 
It is really hard to predict what will happen in cryptocurrency 3 years from now. But base on the latest trend i cryptocurrency, those who didnt believe bitcoin 3 years ago , they are the one who market cryptocurrency and 100% believer. New coin will develop in the market,yet the price still volatile.