Nothing is impossible as in 2016 the bitcoin price was taking tough time to cross $1000 price and that time when someone predicted that in 2017 bitcoin price will cross $10000 and everyone was making joke but when the price started to move above $10000 every one were feeling sad.
why the heck they would feel sad if the price have already climb up to 10k usd ? they should have feel happy with it because they can now sell thier coins at a maximum rate . anyway , the title of this thread seems missleading .
i wont believe that bitcoin would hit 1million usd at the end of 2019 even if i believe that anything is possible in bitcoin . the gap is just too short . i dont think that bitcoin can accumulate enough adoption that fast .
I guess they were feeling sad because they regretted not listening to that humble investor that advised them to invest when bitcoin was about 1000 usd, I also lost the chance too just that my own investment was when BTC got to 7k and I had to buy little since I couldnt afford to buy the whole full coin then.
Finally for the speculation of 1 million usd, it is actually impossible for now as you said, it just mere speculation which is also good though, at least it is better than the negative ones going round this net, this might force lots of potential investors to start investing this year and now that BTC is on 3k trend which will in turn push the market out of the bearish trend.