"well-known"?
I'd love to see a source for the alleged Gartner comment. The only verified well-known Gartner comment in this space that I know of is "two out of five enterprises that experience a disaster will go out of business in five years", from their "Aftermath: Disaster Recovery" report, dated September 21st 2001. See http://www.gartner.com/DisplayDocument?doc_cd=101102
As for Double-Take's suggestion that you shouldn't wait to get a BC plan organized, but should dive right into protecting data first, that's a recipe for wasted money. Not a surprising one, since Double-Take sells data replication products, but one of the biggest mistakes I see customers making is to buy a DR solution and then try to fit it into a BC plan. They usually end up with an inferior solution, or they have to throw it away and start again properly once they understand what they are really protecting.
Do the basic BC plan first, which need not take 9 months as Double-Take claim. Then work on the various response plans, including the one for IT DR. Of course implement some basic sensible policies like backups which are stored offsite, in the interim, but don't waste time & money on a sophisticated system until the analysis is done and you have the MTPD/RPO/RTO figures.