To reach a million dollars by start $10k is possible by duration 3 to 4 years depend on the situation of crypto market. I think many investor who started in crypto since 2011 to 2013 already make it last year, because the price of all popular coin already gained more than 100 times. And now is not late to start it because market cap of crypto still very small and possible to go to multi trillion dollars in a few years.