When the concept has matured and found it's legs it will be interesting to see the real world Companies and Banks fight it.
i think they will join it at this point, they will join it in some way, for example like they are doing right now, with the costruction of their own blockchain, or maybe they will use the bitcoin blockchain to save money and time..if they are smart enough
As million of people using bitcoin debit card.It enable uer to convert Bitcoin to CASH which you can withdraw anonymously from ATMs around the world where bitcoins are excepted.With the growth and fame of bitcoins mastrcard are at risk.They want monopoly and top position on the financial market as payment processor.