Banks will simply not allow this... they will manipulate bitcoin like they manipulate gold they will never let poor people become rich... it was easy in the early days because people thought nothing of it but now its reaching the mainstream the sharks will tear bitcoin piece by piece...
im glad i sold some btc for gold at 445 now if it drops to 100-200 i will rebuy and sell to maximum gain
You are talking through your hat.
There is nothing specific that either Jamie Dimon (or anybody else) did over the past day, for this crash to happen.