Crayon, wouldn't that make the remaining volumes good fodder for the DMG project? It's my hope that for future continuing series, you'll try to make licensing deals that will allow the Guild to continue with volumes even if the print sales don't justify new print volumes. I think making that effort, whenever licensing allows, would go a long way in terms of customer service. People might have more faith in buying Volume 1s if they knew they'd get the whole story, one way or another.
Personally, I'm not buying Guild books because I can't own them in a way I'd like, but I could be tempted to "the dark (digital) side" by a DMG production of the end of a series I'd been following.