Brochures or manuals?

From Creating Passionate Users:

Why do so many companies treat potential users so much better than existing users? Think about it. The brochure is a thing of beauty, while the user manual is a thing of boredom. The brochure gets the big budget while the manual gets the big index. What if we stopped making the docs we give away for free SO much nicer than the ones the user paid for? What if instead of seducing potential users to buy, we seduced existing users to learn?

Let's take the whole damn ad/marketing budget and move it over to product manuals and support. Let's put our money where our users are. If we're in it for the short term, then sure--it makes sense to do everything to get a new user, while doing as little as possible once we've got them. But if we're really in it for the long haul--for customer retention and loyal users--then shouldn't we be using all that graphic design and pro writing talent for the people we care about the most? Our users?