I know pretty much nothing about DH, but it seems to me it's a very small part of the biking population that would own a DH bike. I think there may be a ski mountain around here that has riding in the summer, but I don't think many people would buy a DH bike for a couple days a year. Sure, some will, but not nearly as many that would buy a XC bike.
Man, it looks like a hell of a time though.