Giant ponzis do not run for more than 10 years. At $600,000,000,000 invested in Bitcoin the money supply has dried up. Bitcoin has crashed from $20,000 to $12,000
and high profile people calling Bitcoin a giant scam there is ever increasing risk of international police raiding Bitcoin mines
$ 400 I think it's not possible for bitcoin, although bitcoin goes down but it will not be as low as $ 400. I think otherwise, bitcoin can solve the current problem and could rise higher.
Bitcoins to reach $400 dollars is a miracle because there are a lot of people today who are interested on cryptocurrency and there is no chance for the price of bitcoins to go down to $400 dollars, if people will be rejecting bitcoins then maybe there is a chance but as of today, it was very impossible since cryptocurrency is very popular for long term investment.