Sure, but they are theoretically in more of a position to do so then anyone else (paypal, tipjoy, etc). They have the size to deal with it & they have the ability/experience to lobby Governments.

They also already have their fairly usable online banking systems which would make a good base.

Have you ever talked to anyone who worked at a bank? They aren't exactly out for innovation.

Leveraging yourself 30:1 to buy collateralized debt obligations doesn't count as innovation?

I do agree that there is a great deal of innovation on the high end. You should look into the automated traders they are making these days. Consumer facing services, not so much.