I always fall back to the Dropbox show and tell post on HN and the iPod is lame slashdot meme as a point to everyone on my team because it reinforces that the building part is just one aspect of a business.

I can laugh at this as agency nonsense with the rest of the crowd, and I think some of it may be warranted. But, it is still ultimately how business works insofar as brand matters, small tweaks to brand can have huge ripple effects; mightily so when the product is the brand, and disregarding anything brand or marketing related is foolhardy.