Banks and RSS Feeds

I’ve been living in RSS land for a while now, even using MindManager to aggregate my feeds from Basecamp, Backpack, and Trumba (I use Onfolio for the rest).  Why can’t my bank give me an RSS feed of my account balance?  It doesn’t need any more info, just the number.  I know it wouldn’t replace Quickbooks, but would be a nice feature, nonetheless.