Gord Hotchkiss in MediaPost in an article on Brand Promises Vs. Brand Religions:

One thing that both these natures of brand have in common: ultimately they depend on the values, integrity and effectiveness of the organization that creates the brand. If the brand is a promise of a level of quality, you can’t break the promise with immunity, especially in a digitally amplified world of blogs, forums and buzz. Each of the “promise” brands I used as examples, GM, United and Microsoft, stand in danger of their promises losing all meaning with customers. A promise is only as good as the level of trust you’ve built with the recipient.

But if the brand is a religion, the culture of the organization becomes even more important. Irrational decision factors run amok: the perceived culture of the organization, how the brand label connects with who we are, the social circles it places us it, or the circles we wish it would place us in, the values the company stands for, the exclusivity of the brand. The brand relationship becomes a complex stew of beliefs and emotions. We only make this investment for brands that hold a unique position in our mindscape. We feel we have to get as much from the brand as we’re willing to give it in terms of our emotional loyalty. And if a brand doesn’t reciprocate, it is quickly downscaled from a religion to a passing fancy.