I don't think it can... Rather I would predict to be a co-existing situation with bitcoins and banks. For example, I am using HSBC while I am using ANX, no conflict with each other.
I share the same option with you in the short term. However, it is hard to say in a long-term perspective. The appearance of companies like ANX will certainly bring large pressure to the traditional bank industry. Let's wait and see how everything moves on.