Was very interesting to read. Didn't know that there was a name for this. We all know that when money is at risk, people forgets everything and will do everything to keep their assests safe.
The smartest bank will offer some kind of version of myetherwallet, where there customers can safey store their coins. Of course the bank will charge some kind of fee for this.
If you all believe that they won't be  a market for this, well you are wrong. They have the customer base and have the money to promote it!
The banks will follow the principle: if you can't beat them, join them!