It could happen maybe. If all the system will be cahnged into a very modernized technology like the banking system so it is possible to happen. But if they don't change it then it will just be the same. There's no improvement at all and the money that will be transacted won't that be easy to access. However,if bitcoin will prevail as a replacement for fiat then that's a great idea somehow. There will be no problem for any cash out. On the other hand,there are many things to encounter like hacking info from the internet system. There must be security assistance on this or they must provide so that many investors will trust in bitcoin system as digitized currency.