Well, I never say never but what I would say that devil always lies in the 'unsexy' detail. How many times have we seen IT solutions in organisations that frankly only do what was intended on the front end but what about the rest? The key lies in spending a significant proportion of ones time in IT projects figuring out what the end2end process should be. Once we understand what the real outcome should be, only then will we have customer confidence. Integration will help lower operational cost and increase customer confidence...its not all about the front end.
...never let the front end of the business make promises that the back end can't keep, because that's a sure fire way of destroying customer confidence.