My answer? Yes it did, but in two ways.
First, D&D was definitely an influence on creative people and writers. That’s a given.
However, D&D also inspired other RPGs, which then inspired writing further. D&D also inspired other inspirers as it were.
Frankly, I want to see more on this. I think there’s a huge amount of things to explore in looking how the RPG and RPG like gaming scenes inspired fiction.
Steven Savage is a Geek 2.0 writer, speaker, blogger, and job coach. He blogs on careers at http://www.musehack.com/, publishes books on career and culture at http://www.informotron.com/, and does a site of creative tools at http://www.seventhsanctum.com/. He can be reached at http://www.stevensavage.com/.