Honestly, the volumes are so much smaller than 312/IPA/etc. that I doubt it's a big priority for AB. I'm sure the appreciate the (relatively) modest revenues from these higher margin products in their portfolio, and the great branding impact, but It's not like a thousand more cases of BCBBW versus BCBCS has any kind of serious effect on their bottom line.
Besides that, I'm sure they're getting a sweetheart deal on the coffee from Intelli, since it's such a great marketing device for them. That, and every other brewery -- Including Three Floyds -- is moving away from Intelligentsia for their coffee stouts.