The US government will have taken over the entire sector long before that happens. If you think world governments and banks will let this little experiment interfere with their plans for financial domination of the world, you are sorely mistaken.
Scumbag Jamie Dimon makes one statement and Bitcoin takes a 20% plunge. What do you think is going to happen when the IRS puts it's jackboot down and closes down Coinbase (or at least regulates the sh#& out of it) not to mention any number of alphabet soup government organizations decides to weigh in?
Have fun now. BTC's days are numbered.