What happens when the common rubes on the street figure out it's not possible to create a decentralized digital currency so they have no value at all?  And when people figure out the only possible value prospect they could've had in the first place is determined by transaction flow, not stock.  Meaning value is determined entirely by scalability to facilitate mass commerce, not pretending a bitcoin which is no different than a dogcoin or 1000 other coins is somehow "digital gold".  

The future of bitcoin is just a couple corporations controlling a centralized payment network and lying to everyone claiming it's "decentralized".  It's been a centralized corporation coin ever since the first day ASICS were created, so YEARS now.  The only question is how long can the lie of decentralization last.  Information in the real world is entirely asymmetric.  Mining hardware production is mostly a derivative of this information allocation and the far right side of the bell curve, along with requiring enormous amounts of capital hoarding.  The thing is basically designed from the ground up to be controlled by corporations since nobody else can leverage that much capital + skills required to make them year after year.

If the centralized bitcoin network doesn't die, it's inevitable it will turn into "Googlecoin".