I don't think Bitcoin will come back to 200/300 USD.
but, maybe Jack Ma is right. from 20k to 5.8k in just few months is a clear symptom of a bubble.
it's like dot.com bubble. New really disruptive technologies suffer this...
20k to 5.8k in just few months is NOT a clear symptom of a bubble. Only noobs will think of it this way... in the latter of 2017, bitcoin rockets up from 7k all the way to 19k because some greedy ass hyped it in all forms of media. Try to recall those events and you'll get what am sayin...
Therefore, that " 20k to 5.8k" that you were talkin about is called "corrrrrrection". A huge "corrrection" - whereas the sheep has to sell their btc cheap because they are dumb enough to buy on trend.